libstdc++-v3/ChangeLog

   1 2023-09-04  Christophe Lyon  <christophe.lyon@linaro.org>
   2
   3         PR libstdc++/111238
   4         * configure: Regenerate.
   5         * configure.ac: Call GLIBCXX_CHECK_LINKER_FEATURES in cross,
   6         non-Canadian builds.
   7
   8 2023-09-04  Jonathan Wakely  <jwakely@redhat.com>
   9
  10         * testsuite/26_numerics/complex/literals/types.cc: Remove
  11         dg-options and add target selector instead.
  12
  13 2023-09-04  Jonathan Wakely  <jwakely@redhat.com>
  14
  15         * testsuite/tr1/6_containers/utility/pair.cc: Remove dg-options
  16         and qualify ambiguous calls to get.
  17         * testsuite/tr1/8_c_compatibility/cmath/pow_cmath.cc: Adjust
  18         expected result for std::pow(float, int) as per DR 550.
  19
  20 2023-09-04  Jonathan Wakely  <jwakely@redhat.com>
  21
  22         * testsuite/20_util/auto_ptr/1.cc: Remove dg-options -std=c++03
  23         and add dg-warning for deprecation warnings.
  24         * testsuite/20_util/auto_ptr/2.cc: Likewise.
  25         * testsuite/20_util/auto_ptr/3.cc: Likewise.
  26         * testsuite/20_util/auto_ptr/3946.cc: Likewise.
  27         * testsuite/20_util/auto_ptr/4.cc: Likewise.
  28         * testsuite/20_util/auto_ptr/5.cc: Likewise.
  29         * testsuite/20_util/auto_ptr/6.cc: Likewise.
  30         * testsuite/20_util/auto_ptr/7.cc: Likewise.
  31         * testsuite/20_util/auto_ptr/assign_neg.cc: Likewise.
  32         * testsuite/20_util/auto_ptr/requirements/explicit_instantiation/1.cc:
  33         Likewise.
  34         * testsuite/tr1/2_general_utilities/shared_ptr/assign/auto_ptr.cc:
  35         Likewise.
  36         * testsuite/tr1/2_general_utilities/shared_ptr/assign/auto_ptr_neg.cc:
  37         Likewise.
  38         * testsuite/tr1/2_general_utilities/shared_ptr/assign/auto_ptr_rvalue_neg.cc:
  39         Likewise.
  40         * testsuite/tr1/2_general_utilities/shared_ptr/cons/43820_neg.cc:
  41         Likewise.
  42         * testsuite/tr1/2_general_utilities/shared_ptr/cons/auto_ptr.cc:
  43         Likewise.
  44         * testsuite/tr1/2_general_utilities/shared_ptr/cons/auto_ptr_neg.cc:
  45         Likewise.
  46
  47 2023-09-04  Jonathan Wakely  <jwakely@redhat.com>
  48
  49         PR libstdc++/26142
  50         * testsuite/23_containers/vector/26412-1.cc: Moved to...
  51         * testsuite/23_containers/vector/26142-1.cc: ...here.
  52         * testsuite/23_containers/vector/26412-2.cc: Moved to...
  53         * testsuite/23_containers/vector/26142-2.cc: ...here.
  54
  55 2023-09-04  Jonathan Wakely  <jwakely@redhat.com>
  56
  57         * testsuite/20_util/bitset/107037.cc: Add c++98_only selector.
  58         * testsuite/26_numerics/complex/56111.cc: Likewise.
  59
  60 2023-09-04  Jonathan Wakely  <jwakely@redhat.com>
  61
  62         * testsuite/23_containers/deque/requirements/explicit_instantiation/2.cc:
  63         Add dg-options to restrict the test to C++98 mode.
  64         * testsuite/23_containers/list/requirements/explicit_instantiation/2.cc:
  65         Likewise.
  66
  67 2023-09-04  Jonathan Wakely  <jwakely@redhat.com>
  68
  69         * testsuite/20_util/expected/bad.cc: Add missing target
  70         selector.
  71
  72 2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
  73
  74         * testsuite/25_algorithms/copy/debug/constexpr_neg.cc: Adjust
  75         expected errors.
  76         * testsuite/25_algorithms/equal/debug/constexpr_neg.cc:
  77         Likewise.
  78
  79 2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
  80
  81         * testsuite/27_io/filesystem/iterators/91067.cc: Add
  82         -Wno-self-move to options.
  83         * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
  84
  85 2023-09-01  Vladimir Palevich  <palevichva@gmail.com>
  86
  87         PR libstdc++/110879
  88         * include/bits/vector.tcc (_M_realloc_insert): End guard
  89         lifetime just before assignment to class members.
  90         (_M_default_append): Likewise.
  91
  92 2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
  93
  94         * src/c++17/fs_ops.cc (fs::absolute) [FILESYSTEM_IS_WINDOWS]:
  95         Use __resize_and_overwrite to fill buffer.
  96         (fs::read_symlink) [HAVE_READLINK]: Likewise.
  97         * src/filesystem/ops-common.h (get_temp_directory_from_env)
  98         [FILESYSTEM_IS_WINDOWS]: Likewise.
  99
 100 2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
 101
 102         PR libstdc++/111077
 103         * include/bits/atomic_base.h (__atomic_impl::__compare_exchange):
 104         Add _AtomicRef non-type template parameter and use a loop if it
 105         is true.
 106         (__atomic_impl::compare_exchange_weak): Add _AtomicRef NTTP.
 107         (__atomic_impl::compare_exchange_strong): Likewise.
 108         (atomic_ref::compare_exchange_weak): Use true for NTTP.
 109         (atomic_ref::compare_exchange_strong): Use true for NTTP.
 110         * testsuite/29_atomics/atomic_ref/compare_exchange_padding.cc:
 111         Fix test to not rely on atomic_ref::load() to return an object
 112         with padding preserved.
 113
 114 2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
 115
 116         * testsuite/27_io/filesystem/path/108636.cc: Add dg-require for
 117         filesystem support.
 118
 119 2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
 120
 121         * src/c++20/tzdb.cc (tzdb::current_zone): Check configure macros
 122         for POSIX readlink before using filesystem::read_symlink.
 123
 124 2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
 125
 126         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Default to yes.
 127         * configure: Regenerate.
 128
 129 2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
 130
 131         * include/bits/chrono_io.h (_Parser::operator()): Set failbit
 132         early if invalid values are read when _M_need & _TimeOfDay is
 133         non-zero.
 134         * testsuite/std/time/parse.cc: Check that "25:59" cannot be
 135         parsed for "%H:%M".
 136
 137 2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
 138
 139         PR libstdc++/111162
 140         * include/bits/chrono_io.h (_Parser::Operator()): Check %C
 141         values are in range of year::min() to year::max().
 142         * testsuite/std/time/parse.cc: Check out of range centuries.
 143
 144 2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
 145
 146         * include/std/format (__format::_Sink::_M_reset): Change second
 147         argument from iterator to offset.
 148
 149 2023-08-24  Paul Dreik  <gccpatches@pauldreik.se>
 150
 151         PR libstdc++/111102
 152         * testsuite/std/format/string.cc: Check wide character format
 153         strings with out-of-range widths.
 154
 155 2023-08-24  Paul Dreik  <gccpatches@pauldreik.se>
 156
 157         PR libstdc++/111102
 158         * include/std/format (__format::__parse_integer): Check for
 159         non-null pointer.
 160
 161 2023-08-24  Jonathan Wakely  <jwakely@redhat.com>
 162
 163         * testsuite/std/format/functions/format_to.cc: Avoid warning for
 164         unused variables.
 165
 166 2023-08-24  Jonathan Wakely  <jwakely@redhat.com>
 167
 168         * include/std/atomic: Add comment to #ifdef and fix indentation.
 169         * include/std/ostream: Check __glibcxx_syncbuf instead of
 170         __cplusplus and _GLIBCXX_HOSTED.
 171         * include/std/thread: Add comment to #ifdef.
 172
 173 2023-08-24  Jonathan Wakely  <jwakely@redhat.com>
 174
 175         * include/bits/version.def (__cpp_lib_ratio): Define.
 176         * include/bits/version.h: Regenerate.
 177         * include/std/ratio (quecto, ronto, yocto, zepto)
 178         (zetta, yotta, ronna, quetta): Define.
 179         * testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Adjust
 180         dg-error line numbers.
 181
 182 2023-08-24  Jonathan Wakely  <jwakely@redhat.com>
 183
 184         * python/libstdcxx/v6/printers.py (StdLocalePrinter): New
 185         printer class.
 186         * testsuite/libstdc++-prettyprinters/locale.cc: New test.
 187
 188 2023-08-24  Jonathan Wakely  <jwakely@redhat.com>
 189
 190         PR libstdc++/110944
 191         * python/libstdcxx/v6/printers.py (StdExpOptionalPrinter): Do
 192         not show template arguments.
 193         (StdVariantPrinter): Likewise.
 194         * testsuite/libstdc++-prettyprinters/compat.cc: Adjust expected
 195         output.
 196         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
 197         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
 198
 199 2023-08-23  François Dumont  <fdumont@gcc.gnu.org>
 200
 201         * testsuite/util/replacement_memory_operators.h
 202         (counter::scope): New, capture and reset counter count at construction and
 203         restore it at destruction.
 204         (counter::check_new): Add scope instantiation.
 205         * testsuite/23_containers/unordered_map/96088.cc (main):
 206         Add counter::scope instantiation.
 207         * testsuite/23_containers/unordered_multimap/96088.cc (main): Likewise.
 208         * testsuite/23_containers/unordered_multiset/96088.cc (main): Likewise.
 209         * testsuite/23_containers/unordered_set/96088.cc (main): Likewise.
 210         * testsuite/ext/malloc_allocator/deallocate_local.cc (main): Likewise.
 211         * testsuite/ext/new_allocator/deallocate_local.cc (main): Likewise.
 212         * testsuite/ext/throw_allocator/deallocate_local.cc (main): Likewise.
 213         * testsuite/ext/pool_allocator/allocate_chunk.cc (started): New global.
 214         (operator new(size_t)): Check started.
 215         (main): Set/Unset started.
 216         * testsuite/17_intro/no_library_allocation.cc: New test case.
 217
 218 2023-08-21  Jonathan Wakely  <jwakely@redhat.com>
 219
 220         * testsuite/18_support/nested_exception/rethrow_if_nested-term.cc:
 221         Call std::set_terminate before throwing the nested exception.
 222
 223 2023-08-18  Jonathan Wakely  <jwakely@redhat.com>
 224
 225         PR target/111060
 226         * include/std/format (formatter): Only define specializations
 227         for 16-bit floating-point types for C++23.
 228         * include/std/limits (numeric_limits): Likewise.
 229
 230 2023-08-18  Jonathan Wakely  <jwakely@redhat.com>
 231
 232         * include/bits/chrono_io.h (operator<<): Make uses of wide
 233         strings with streams and std::format type-dependent on _CharT.
 234         * include/std/format [!_GLIBCXX_USE_WCHAR_T] Do not use
 235         __to_wstring_numeric.
 236
 237 2023-08-18  Jonathan Wakely  <jwakely@redhat.com>
 238
 239         * include/bits/chrono_io.h (operator<<): Use __format_context.
 240         * include/std/format (__format::__format_context): New alias
 241         template.
 242         [!_GLIBCXX_USE_WCHAR_T] (wformat_args, make_wformat_arg):
 243         Disable.
 244
 245 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
 246
 247         Revert:
 248         2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
 249
 250         * config/locale/generic/c_locale.cc (__convert_to_v): Reuse
 251         double overload for long double if possible.
 252
 253 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
 254
 255         * src/c++20/tzdb.cc (tzdata_file, leaps_file): Change type to
 256         std::string_view.
 257
 258 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
 259
 260         * config/locale/generic/c_locale.cc (__convert_to_v): Reuse
 261         double overload for long double if possible.
 262
 263 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
 264
 265         * src/c++98/localename.cc (is_C_locale): New function.
 266         (locale::locale(const char*)): Use is_C_locale.
 267
 268 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
 269
 270         PR libstdc++/110945
 271         * include/bits/basic_string.h (basic_string::assign(Iter, Iter)):
 272         Dispatch to _M_replace or move assignment from a temporary,
 273         based on the iterator type.
 274
 275 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
 276
 277         * include/std/format (formatter): Add partial specializations
 278         for extended floating-point types.
 279         * testsuite/std/format/functions/format.cc: Move test_float128()
 280         to ...
 281         * testsuite/std/format/formatter/ext_float.cc: New test.
 282
 283 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
 284
 285         * include/bits/c++config (__gnu_cxx::__bfloat16_t): Define
 286         whenever __BFLT16_DIG__ is defined, not only for C++23.
 287         * include/std/limits (numeric_limits<bfloat16_t>): Likewise.
 288         (numeric_limits<_Float16>, numeric_limits<_Float32>)
 289         (numeric_limits<_Float64>): Likewise for other extended
 290         floating-point types.
 291
 292 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
 293
 294         * include/experimental/internet (address_v4::to_string): Remove
 295         unused parameter name.
 296
 297 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
 298
 299         * libsupc++/compare (__cmp_cat::__unseq): Make ctor consteval.
 300         * testsuite/18_support/comparisons/categories/zero_neg.cc: Prune
 301         excess errors caused by invalid consteval calls.
 302
 303 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
 304
 305         * include/bits/chrono_io.h (__units_suffix_misc): Remove.
 306         (__units_suffix): Return a known suffix as string view, do not
 307         write unknown suffixes to a buffer.
 308         (__fmt_units_suffix): New function that formats the suffix using
 309         std::format_to.
 310         (operator<<, __chrono_formatter::_M_q): Use __fmt_units_suffix.
 311         (__chrono_formatter::_M_Z): Correct lifetime of wstring.
 312
 313 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
 314
 315         * include/std/format [_GLIBCXX_USE_WCHAR_T]: Guard all wide
 316         string formatters with this macro.
 317         (__formatter_int::_M_format_int, __formatter_fp::format)
 318         (formatter<const void*, C>::format): Use __to_wstring_numeric
 319         instead of std::ctype::widen.
 320         (__formatter_fp::_M_localize): Use hardcoded wchar_t values
 321         instead of std::ctype::widen.
 322         * testsuite/std/format/functions/format.cc: Add more checks for
 323         wstring formatting of arithmetic types.
 324
 325 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
 326
 327         * include/bits/basic_string.h (to_string(floating-point-type)):
 328         Implement using std::to_chars for C++26.
 329         * include/bits/version.def (__cpp_lib_to_string): Define.
 330         * include/bits/version.h: Regenerate.
 331         * testsuite/21_strings/basic_string/numeric_conversions/char/dr1261.cc:
 332         Adjust expected result in C++26 mode.
 333         * testsuite/21_strings/basic_string/numeric_conversions/char/to_string.cc:
 334         Likewise.
 335         * testsuite/21_strings/basic_string/numeric_conversions/wchar_t/dr1261.cc:
 336         Likewise.
 337         * testsuite/21_strings/basic_string/numeric_conversions/wchar_t/to_wstring.cc:
 338         Likewise.
 339         * testsuite/21_strings/basic_string/numeric_conversions/char/to_string_float.cc:
 340         New test.
 341         * testsuite/21_strings/basic_string/numeric_conversions/wchar_t/to_wstring_float.cc:
 342         New test.
 343         * testsuite/21_strings/basic_string/numeric_conversions/version.cc:
 344         New test.
 345
 346 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
 347
 348         * include/bits/basic_string.h (to_string(integral-type)): Use
 349         resize_and_overwrite when available.
 350         (__to_wstring_numeric): New helper functions.
 351         (to_wstring): Use std::to_string then __to_wstring_numeric.
 352         * testsuite/21_strings/basic_string/numeric_conversions/char/to_string_int.cc:
 353         Remove check for no excess capacity.
 354
 355 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
 356
 357         * include/bits/basic_string.h (__resize_and_overwrite): New
 358         function.
 359         * include/bits/basic_string.tcc (__resize_and_overwrite): New
 360         function.
 361         (resize_and_overwrite): Simplify by using reserve instead of
 362         growing the string manually. Adjust for C++11 compatibility.
 363         * include/bits/cow_string.h (resize_and_overwrite): New
 364         function.
 365         (__resize_and_overwrite): New function.
 366         * include/bits/version.def (__cpp_lib_string_resize_and_overwrite):
 367         Do not depend on cxx11abi.
 368         * include/bits/version.h: Regenerate.
 369         * include/std/format (__formatter_fp::_S_resize_and_overwrite):
 370         Remove.
 371         (__formatter_fp::format, __formatter_fp::_M_localize): Use
 372         __resize_and_overwrite instead of _S_resize_and_overwrite.
 373         * testsuite/21_strings/basic_string/capacity/char/resize_and_overwrite.cc:
 374         Adjust for C++11 compatibility when included by ...
 375         * testsuite/21_strings/basic_string/capacity/char/resize_and_overwrite_ext.cc:
 376         New test.
 377
 378 2023-08-17  Patrick Palka  <ppalka@redhat.com>
 379
 380         * include/bits/regex.h (regex_iterator::iterator_concept):
 381         Define for C++20 as per P2770R0.
 382         (regex_token_iterator::iterator_concept): Likewise.
 383         * include/std/ranges (__detail::__as_lvalue): Define.
 384         (join_view::_Iterator): Befriend join_view.
 385         (join_view::_Iterator::_M_satisfy): Use _M_get_outer
 386         instead of _M_outer.
 387         (join_view::_Iterator::_M_get_outer): Define.
 388         (join_view::_Iterator::_Iterator): Split constructor taking
 389         _Parent argument into two as per P2770R0.  Remove constraint on
 390         default constructor.
 391         (join_view::_Iterator::_M_outer): Make this data member present
 392         only when the underlying range is forward.
 393         (join_view::_Iterator::operator++): Use _M_get_outer instead of
 394         _M_outer.
 395         (join_view::_Iterator::operator--): Use __as_lvalue helper.
 396         (join_view::_Iterator::operator==): Adjust constraints as per
 397         P2770R0.
 398         (join_view::_Sentinel::__equal): Use _M_get_outer instead of
 399         _M_outer.
 400         (join_view::_M_outer): New data member when the underlying range
 401         is non-forward.
 402         (join_view::begin): Adjust definition as per P2770R0.
 403         (join_view::end): Likewise.
 404         (join_with_view::_M_outer_it): New data member when the
 405         underlying range is non-forward.
 406         (join_with_view::begin): Adjust definition as per P2770R0.
 407         (join_with_view::end): Likewise.
 408         (join_with_view::_Iterator::_M_outer_it): Make this data member
 409         present only when the underlying range is forward.
 410         (join_with_view::_Iterator::_M_get_outer): Define.
 411         (join_with_view::_Iterator::_Iterator): Split constructor
 412         taking _Parent argument into two as per P2770R0.  Remove
 413         constraint on default constructor.
 414         (join_with_view::_Iterator::_M_update_inner): Adjust definition
 415         as per P2770R0.
 416         (join_with_view::_Iterator::_M_get_inner): Likewise.
 417         (join_with_view::_Iterator::_M_satisfy): Adjust calls to
 418         _M_get_inner.  Use _M_get_outer instead of _M_outer_it.
 419         (join_with_view::_Iterator::operator==): Adjust constraints
 420         as per P2770R0.
 421         (join_with_view::_Sentinel::operator==): Use _M_get_outer
 422         instead of _M_outer_it.
 423         * testsuite/std/ranges/adaptors/p2770r0.cc: New test.
 424
 425 2023-08-17  Patrick Palka  <ppalka@redhat.com>
 426
 427         PR libstdc++/108827
 428         * include/std/ranges (__adaptor::_RangeAdaptorClosure):
 429         Convert into a CRTP class template.  Move hidden operator|
 430         friends into namespace scope and adjust their constraints.
 431         (__closure::__is_range_adaptor_closure_fn): Define.
 432         (__closure::__is_range_adaptor_closure): Define.
 433         (__adaptor::_Partial): Adjust use of _RangeAdaptorClosure.
 434         (__adaptor::_Pipe): Likewise.
 435         (views::_All): Likewise.
 436         (views::_Join): Likewise.
 437         (views::_Common): Likewise.
 438         (views::_Reverse): Likewise.
 439         (views::_Elements): Likewise.
 440         (views::_Adjacent): Likewise.
 441         (views::_AsRvalue): Likewise.
 442         (views::_Enumerate): Likewise.
 443         (views::_AsConst): Likewise.
 444         * testsuite/std/ranges/adaptors/all.cc: Reinstate assertion
 445         expecting that adding empty range adaptor closure objects to a
 446         pipeline doesn't increase the size of a pipeline.
 447
 448 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
 449
 450         * include/std/format (__format::_Pres_type): Add _Pres_F.
 451         (__formatter_fp::parse): Use _Pres_F for 'F'.
 452         (__formatter_fp::format): Set __upper for _Pres_F.
 453         * testsuite/std/format/functions/format.cc: Check formatting of
 454         infinity and NaN for each presentation type.
 455
 456 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
 457
 458         * include/Makefile.in: Regenerate.
 459
 460 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
 461
 462         * testsuite/24_iterators/move_iterator/p2520r0.cc: Add no_pch.
 463         * testsuite/std/format/functions/format.cc: Likewise.
 464         * testsuite/std/format/functions/format_c++23.cc: Likewise.
 465
 466 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
 467
 468         * testsuite/lib/dg-options.exp (add_options_for_no_pch): Remove
 469         any "-include bits/stdc++.h" from options and add the macro to
 470         the existing options instead of replacing them.
 471
 472 2023-08-16  Jonathan Wakely  <jwakely@redhat.com>
 473
 474         * include/bits/basic_string.tcc (resize_and_overwrite): Invoke
 475         the callable with the same size as resize_and_overwrite was
 476         called with.
 477         * testsuite/21_strings/basic_string/capacity/char/resize_and_overwrite.cc:
 478         Check with small values for the new size.
 479         * testsuite/std/format/functions/format.cc: Check wide
 480         formatting of double values that produce small strings.
 481         * testsuite/std/format/functions/format_c++23.cc: New test.
 482
 483 2023-08-16  Jonathan Wakely  <jwakely@redhat.com>
 484
 485         * include/bits/version.def (stds): Update value for C++23.
 486         * include/bits/version.h: Regenerate.
 487
 488 2023-08-16  Jonathan Wakely  <jwakely@redhat.com>
 489
 490         * testsuite/25_algorithms/pstl/alg_sorting/set_difference.cc:
 491         Fix name of upstream file this was derived from.
 492         * testsuite/25_algorithms/pstl/alg_sorting/set_intersection.cc:
 493         Likewise.
 494         * testsuite/25_algorithms/pstl/alg_sorting/set_symmetric_difference.cc:
 495         Likewise.
 496         * testsuite/25_algorithms/pstl/alg_sorting/set_union.cc:
 497         Likewise.
 498         * testsuite/25_algorithms/pstl/alg_sorting/set_util.h: Likewise.
 499
 500 2023-08-16  Arsen Arsenović  <arsen@aarsen.me>
 501
 502         * libsupc++/typeinfo: Switch to bits/version.h for
 503         __cpp_lib_constexpr_typeinfo.
 504         * libsupc++/new: Switch to bits/version.h for
 505         __cpp_lib_{launder,hardware_interference_size,destroying_delete}.
 506         (launder): Guard behind __cpp_lib_launder.
 507         (hardware_destructive_interference_size)
 508         (hardware_constructive_interference_size): Guard behind
 509         __cpp_lib_hardware_interference_size.
 510         * libsupc++/exception: Switch to bits/version.h for
 511         __cpp_lib_uncaught_exceptions.
 512         (uncaught_exceptions): Guard behind __cpp_lib_uncaught_exceptions.
 513         * libsupc++/compare: Switch to bits/version.h for
 514         __cpp_lib_three_way_comparison.
 515         (three_way_comparable, three_way_comparable_with)
 516         (compare_three_way, weak_order, strong_order, partial_order):
 517         Guard behind __cpp_lib_three_way_comparison >= 201907L.
 518         * include/std/chrono: Drop __cpp_lib_chrono definition.
 519         * include/std/vector: Switch to bits/version.h for
 520         __cpp_lib_erase_if.
 521         (erase, erase_if): Guard behind __cpp_lib_erase_if.
 522         * include/std/variant: Switch to bits/version.h for
 523         __cpp_lib_variant.  Guard whole header behind that FTM.
 524         * include/std/utility: Switch to bits/version.h for
 525         __cpp_lib_{exchange_function,constexpr_algorithms,as_const},
 526         __cpp_lib_{integer_comparison_functions,to_underlying}, and
 527         __cpp_lib_unreachable.
 528         (exchange): Guard behind __cpp_lib_exchange_function.
 529         (cmp_equal, cmp_not_equal, cmp_less, cmp_greater, cmp_less_equal)
 530         (cmp_greater_equal, in_range): Guard behind
 531         __cpp_lib_integer_comparison_functions.
 532         (to_underlying): Guard behind __cpp_lib_to_underlying.
 533         (unreachable): Guard behind __cpp_lib_unreachable.
 534         * include/std/type_traits: Switch to bits/version.h for
 535         __cpp_lib_is_{null_pointer,final,nothrow_convertible,aggregate},
 536         __cpp_lib_is_{constant_evaluated,invocable,layout_compatible},
 537         __cpp_lib_is_{pointer_interconvertible,scoped_enum,swappable},
 538         __cpp_lib_{logical_traits,reference_from_temporary,remove_cvref},
 539         __cpp_lib_{result_of_sfinae,transformation_trait_aliases},
 540         __cpp_lib_{type_identity,type_trait_variable_templates},
 541         __cpp_lib_{unwrap_ref,void_t,integral_constant_callable},
 542         __cpp_lib_{bool_constant,bounded_array_traits}, and
 543         __cpp_lib_has_unique_object_representations.
 544         (integral_constant::operator()): Guard behind
 545         __cpp_lib_integral_constant_callable.
 546         (bool_constant): Guard behind __cpp_lib_bool_constant.
 547         (conjunction, disjunction, negation, conjunction_v, disjunction_v)
 548         (negation_v): Guard behind __cpp_lib_logical_traits.
 549         (is_null_pointer): Guard behind __cpp_lib_is_null_pointer.
 550         (is_final): Guard behind __cpp_lib_is_final.
 551         (is_nothrow_convertible, is_nothrow_convertible_v): Guard behind
 552         __cpp_lib_is_nothrow_convertible.
 553         (remove_const_t, remove_volatile_t, remove_cv_t)
 554         (add_const_t, add_volatile_t, add_cv_t): Guard behind
 555         __cpp_lib_transformation_trait_aliases.
 556         (void_t): Guard behind __cpp_lib_void_t.
 557         (is_swappable_with_v, is_nothrow_swappable_with_v)
 558         (is_swappable_with, is_nothrow_swappable_with): Guard behind
 559         __cpp_lib_is_swappable.
 560         (is_nothrow_invocable_r, is_invocable_r, invoke_result)
 561         (is_invocable, invoke_result_t): Guard behind
 562         __cpp_lib_is_invocable.
 563         (alignment_of_v, extent_v, has_virtual_destructor_v)
 564         (is_abstract_v, is_arithmetic_v, is_array_v)
 565         (is_assignable_v, is_base_of_v, is_class_v, is_compound_v)
 566         (is_constructible_v, is_const_v, is_convertible_v)
 567         (is_copy_assignable_v, is_copy_constructible_v)
 568         (is_default_constructible_v, is_destructible_v)
 569         (is_empty_v, is_enum_v, is_final_v, is_floating_point_v)
 570         (is_function_v, is_fundamental_v, is_integral_v)
 571         (is_invocable_r_v, is_invocable_v, is_literal_type_v)
 572         (is_lvalue_reference_v, is_member_function_pointer_v)
 573         (is_member_object_pointer_v, is_member_pointer_v)
 574         (is_move_assignable_v, is_move_constructible_v)
 575         (is_nothrow_assignable_v, is_nothrow_constructible_v)
 576         (is_nothrow_copy_assignable_v, is_nothrow_copy_constructible_v)
 577         (is_nothrow_default_constructible_v, is_nothrow_destructible_v)
 578         (is_nothrow_invocable_r_v, is_nothrow_invocable_v)
 579         (is_nothrow_move_assignable_v, is_nothrow_move_constructible_v)
 580         (is_null_pointer_v, is_object_v, is_pod_v, is_pointer_v)
 581         (is_polymorphic_v, is_reference_v, is_rvalue_reference_v)
 582         (is_same_v, is_scalar_v, is_signed_v, is_standard_layout_v)
 583         (is_trivially_assignable_v, is_trivially_constructible_v)
 584         (is_trivially_copyable_v, is_trivially_copy_assignable_v)
 585         (is_trivially_copy_constructible_v)
 586         (is_trivially_default_constructible_v)
 587         (is_trivially_destructible_v, is_trivially_move_assignable_v)
 588         (is_trivially_move_constructible_v, is_trivial_v, is_union_v)
 589         (is_unsigned_v, is_void_v, is_volatile_v, rank_v, as variadic):
 590         Guard behind __cpp_lib_type_trait_variable_templates.
 591         (has_unique_object_representations)
 592         (has_unique_object_representations_v): Guard behind
 593         __cpp_lib_has_unique_object_representation.
 594         (is_aggregate): Guard behind __cpp_lib_is_aggregate.
 595         (remove_cvref, remove_cvref_t): Guard behind
 596         __cpp_lib_remove_cvref.
 597         (type_identity, type_identity_t): Guard behind
 598         __cpp_lib_type_identity.
 599         (unwrap_reference, unwrap_reference_t, unwrap_ref_decay)
 600         (unwrap_ref_decay_t): Guard behind __cpp_lib_unwrap_ref.
 601         (is_bounded_array_v, is_unbounded_array_v, is_bounded_array)
 602         (is_unbounded_array): Guard behind __cpp_lib_bounded_array_traits.
 603         (is_scoped_enum, is_scoped_enum_v): Guard behind
 604         __cpp_lib_is_scoped_enum.
 605         (reference_constructs_from_temporary)
 606         (reference_constructs_from_temporary_v): Guard behind
 607         __cpp_lib_reference_from_temporary.
 608         * include/std/tuple: Switch to bits/version.h for
 609         __cpp_lib_{constexpr_tuple,tuple_by_type,apply_make_from_tuple}.
 610         (get<T>): Guard behind __cpp_lib_tuple_by_type.
 611         (apply): Guard behind __cpp_lib_apply.
 612         (make_from_tuple): Guard behind __cpp_lib_make_from_tuple.
 613         * include/std/syncstream: Switch to bits/version.h for
 614         __cpp_lib_syncbuf.  Guard header behind that FTM.
 615         * include/std/string_view: Switch to bits/version.h for
 616         __cpp_lib_{string_{view,contains},constexpr_string_view} and
 617         __cpp_lib_starts_ends_with.
 618         (basic_string_view::starts_with, basic_string_view::ends_with):
 619         Guard behind __cpp_lib_starts_ends_with.
 620         [C++23 && _GLIBCXX_HOSTED && !defined(__cpp_lib_string_contains)]:
 621         Assert as impossible ithout a bug in C++23.
 622         * include/std/string: Switch to bits/version.h for
 623         __cpp_lib_erase_if.
 624         (erase, erase_if): Guard behind __cpp_lib_erase_if.
 625         * include/std/thread: Switch to bits/version.h for
 626         __cpp_lib_jthread.
 627         * include/std/stop_token: Switch to bits/version.h for
 628         __cpp_lib_jthread.
 629         * include/std/spanstream: Switch to bits/version.h for
 630         __cpp_lib_spanstream.  Guard header behind that FTM.
 631         * include/std/span: Switch to bits/version.h for __cpp_lib_span.
 632         Guard header behind that FTM.
 633         * include/std/source_location: Switch to bits/version.h for
 634         __cpp_lib_source_location.  Guard header with that FTM.
 635         * include/std/shared_mutex: Switch to bits/version.h for
 636         __cpp_lib_shared{,_timed}_mutex.
 637         (shared_mutex): Guard behind __cpp_lib_shared_mutex.
 638         * include/std/semaphore: Switch to bits/version.h for
 639         __cpp_lib_semaphore.  Guard header behind that FTM.
 640         * include/std/ranges: Switch to bits/version.h for
 641         __cpp_lib_ranges_{zip,chunk{,_by},slide,join_with},
 642         __cpp_lib_ranges_{repeat_stride,cartesian_product,as_rvalue},
 643         and __cpp_lib_ranges_{as_const,enumerate,iota}.
 644         (ranges::zip et al, ranges::chunk et al, ranges::slide et al)
 645         (ranges::chunk_by et al, ranges::join_with et al)
 646         (ranges::stride et al, ranges::cartesian_product et al)
 647         (ranges::as_rvalue et al, ranges::as_const et al)
 648         (ranges::enumerate et al): Guard behind appropriate FTM.
 649         * include/std/optional: Switch to bits/version.h for
 650         __cpp_lib_optional.  Guard header behind that FTM.
 651         * include/std/numeric: Switch to bits/version.h for
 652         __cpp_lib_{gcd{,_lcm},lcm,constexpr_numeric,interpolate}
 653         and __cpp_lib_parallel_algorithm.
 654         (gcd, lcm): Guard behind __cpp_lib_gcd_lcm.
 655         (midpoint): Guard behind __cpp_lib_interpolate.
 656         * include/std/numbers: Switch to bits/version.h for
 657         __cpp_lib_math_constants.  Guard header behind that FTM.
 658         * include/std/mutex: Switch to bits/version.h for
 659         __cpp_lib_scoped_lock.
 660         (scoped_Lock): Guard behind __cpp_lib_scoped_lock.
 661         * include/std/memory_resource: Switch to bits/version.h for
 662         __cpp_lib_{polymorphic_allocator,memory_resource}.
 663         (synchronized_pool_resource): Guard behind
 664         __cpp_lib_memory_resource >= 201603L.
 665         (polymorphic_allocator): Guard behind
 666         __cpp_lib_polymorphic_allocator.
 667         * include/std/memory: Switch to bits/version.h for
 668         __cpp_lib_{parallel_algorithm,atomic_value_initialization}.
 669         * include/std/list: Switch to bits/version.h for
 670         __cpp_lib_erase_if.
 671         (erase, erase_if): Guard behind __cpp_lib_erase_if.
 672         * include/std/latch: Switch to bits/version.h for __cpp_lib_latch.
 673         Guard header behind that FTM.
 674         * include/std/iterator: Switch to bits/version.h for
 675         __cpp_lib_null_iterators.
 676         * include/std/iomanip: Switch to bits/version.h for
 677         __cpp_lib_quoted_string_io.
 678         (quoted): Guard behind __cpp_lib_quoted_string_io.
 679         * include/std/functional: Switch to bits/version.h for
 680         __cpp_lib_{invoke{,_r},constexpr_functional,bind_front} and
 681         __cpp_lib_{not_fn,booyer_moore_searcher}.
 682         (invoke): Guard behind __cpp_lib_invoke.
 683         (invoke_r): Guard behind __cpp_lib_invoke_r.
 684         (bind_front): Guard behind __cpp_lib_bind_front.
 685         (not_fn): Guard behind __cpp_lib_not_fn.
 686         (boyer_moore_searcher, boyer_moore_horspool_searcher): Guard
 687         definition behind __cpp_lib_boyer_moore_searcher.
 688         * include/std/forward_list: Switch to bits/version.h for
 689         __cpp_lib_erase_if.
 690         (erase, erase_if): Guard behind __cpp_lib_erase_if.
 691         * include/std/format: Switch to bits/version.h for
 692         __cpp_lib_format.  Guard header behind that FTM.
 693         * include/std/filesystem: Switch to bits/version.h for
 694         __cpp_lib_filesystem.  Guard header behind that FTM.
 695         * include/std/expected: Switch to bits/version.h for
 696         __cpp_lib_expected.  Guard header behind it.
 697         * include/std/execution: Switch to bits/version.h for
 698         __cpp_lib_{execution,parallel_algorithm}.  Guard header behind
 699         either.
 700         * include/std/deque: Switch to bits/version.h for
 701         __cpp_lib_erase_if.
 702         (erase, erase_if): Guard behind __cpp_lib_erase_if.
 703         * include/std/coroutine: Switch to bits/version.h for
 704         __cpp_lib_coroutine.  Guard header behind that FTM.
 705         * include/std/concepts: Switch to bits/version.h for
 706         __cpp_lib_concepts.  Guard header behind that FTM.
 707         * include/std/complex: Switch to bits/version.h for
 708         __cpp_lib_{complex_udls,constexpr_complex}.
 709         (operator""if, operator""i, operator""il): Guard behind
 710         __cpp_lib_complex_udls.
 711         * include/std/charconv: Swtich to bits/version.h for
 712         __cpp_lib_{to_chars,constexpr_charconv}.
 713         * include/std/bitset: Switch to bits/version.h for
 714         __cpp_lib_constexpr_bitset.
 715         * include/std/bit: Switch to bits/version.h for
 716         __cpp_lib_{bit_cast,byteswap,bitops,int_pow2,endian}.
 717         (bit_cast): Guard behind __cpp_lib_bit_cast.
 718         (byteswap): Guard behind __cpp_lib_byteswap.
 719         (rotl, rotr, countl_zero, countl_one, countr_zero, countr_one)
 720         (popcount): Guard behind __cpp_lib_bitops.
 721         (has_single_bit, bit_ceil, bit_floor, bit_width): Guard behind
 722         __cpp_lib_int_pow2.
 723         (endian): Guard behind __cpp_lib_endian.
 724         * include/std/barrier: Switch to bits/version.h for
 725         __cpp_lib_barrier.  Guard header behind that FTM.
 726         * include/std/atomic: Switch to bits/version.h for
 727         __cpp_lib_atomic_{is_always_lock_free,float,ref}
 728         and __cpp_lib_lock_free_type_aliases.
 729         (*::is_always_lock_free): Guard behind
 730         __cpp_lib_atomic_is_always_lock_free.
 731         (atomic<float>): Guard behind __cpp_lib_atomic_float.
 732         (atomic_ref): Guard behind __cpp_lib_atomic_ref.
 733         (atomic_signed_lock_free, atomic_unsigned_lock_free): Guard behind
 734         __cpp_lib_atomic_lock_free_type_aliases.
 735         * include/std/array: Switch to bits/version.h for
 736         __cpp_lib_to_array.
 737         (to_array): Guard behind __cpp_lib_to_array.
 738         * include/std/any: Switch to bits/version.h for __cpp_lib_any.
 739         Guard header behind that FTM.
 740         * include/std/algorithm: Switch to bits/version.h for
 741         __cpp_lib_parallel_algorithm.
 742         * include/c_global/cstddef: Switch to bits/version.h for
 743         __cpp_lib_byte.
 744         (byte): Guard behind __cpp_lib_byte.
 745         * include/c_global/cmath: Switch to bits/version.h for
 746         __cpp_lib_{hypot,interpolate}.
 747         (hypot3): Guard behind __cpp_lib_hypot.
 748         (lerp): Guard behind __cpp_lib_interpolate.
 749         * include/c_compatibility/stdatomic.h: Switch to
 750         bits/stl_version.h for __cpp_lib_atomic.  Guard header behind that
 751         FTM.
 752         * include/bits/utility.h: Switch to bits/version.h for
 753         __cpp_lib_{tuple_element_t,integer_sequence,ranges_zip}.
 754         (tuple_element_t): Guard behind __cpp_lib_tuple_element_t.
 755         (integer_sequence et al): Guard behind __cpp_lib_integer_sequence.
 756         * include/bits/uses_allocator_args.h: Switch to bits/version.h for
 757         __cpp_lib_make_obj_using_allocator.  Guard header behind that FTM.
 758         * include/bits/unordered_map.h: Switch to bits/version.h for
 759         __cpp_lib_unordered_map_try_emplace.
 760         (try_emplace): Guard behind __cpp_lib_unordered_map_try_emplace.
 761         * include/bits/unique_ptr.h: Switch to bits/version.h for
 762         __cpp_lib_{constexpr_memory,make_unique}.
 763         (make_unique): Guard behind __cpp_lib_make_unique.
 764         * include/bits/stl_vector.h: Switch to bits/version.h for
 765         __cpp_lib_constexpr_vector.
 766         * include/bits/stl_uninitialized.h: Switch to bits/version.h for
 767         __cpp_lib_raw_memory_algorithms.
 768         (uninitialized_default_construct)
 769         (uninitialized_default_construct_n, uninitialized_move)
 770         (uninitialized_move_n, uninitialized_value_construct)
 771         (uninitialized_value_construct_n): Guard behind
 772         __cpp_lib_raw_memory_algorithms.
 773         * include/bits/stl_tree.h: Switch to bits/version.h for
 774         __cpp_lib_generic_associative_lookup.
 775         * include/bits/stl_stack.h: Switch to bits/version.h for
 776         __cpp_lib_adaptor_iterator_pair_constructor.
 777         (stack): Guard iterator-pair constructor behind
 778         __cpp_lib_adaptor_iterator_pair_constructor.
 779         * include/bits/stl_queue.h: Switch to bits/version.h for
 780         __cpp_lib_adaptor_iterator_pair_constructor.
 781         (queue): Guard iterator-pair constructor behind
 782         __cpp_lib_adaptor_iterator_pair_constructor.
 783         * include/bits/stl_pair.h: Switch to bits/version.h for
 784         __cpp_lib_{concepts,tuples_by_type}.
 785         (get): Guard type-getting overloads behind
 786         __cpp_lib_tuples_by_type.
 787         * include/bits/stl_map.h: Switch to bits/version.h for
 788         __cpp_lib_map_try_emplace.
 789         (map<>::try_emplace): Guard behind __cpp_lib_map_try_emplace.
 790         * include/bits/stl_list.h: Switch to bits/version.h for
 791         __cpp_lib_list_remove_return_type.
 792         (__remove_return_type, _GLIBCXX_LIST_REMOVE_RETURN_TYPE_TAG)
 793         [C++20]: guard behind __cpp_lib_list_remove_return_type instead.
 794         * include/bits/stl_iterator.h: Switch to bits/version.h for
 795         __cpp_lib_{constexpr_iterator,array_constexpr} and
 796         __cpp_lib_{make_reverse_iterator,move_iterator_concept}.
 797         (make_reverse_iterator): Guard behind
 798         __cpp_lib_make_reverse_iterator.
 799         (iterator_concept et al): Guard __cpp_lib_move_iterator_concept
 800         changes behind that FTM.
 801         * include/bits/stl_function.h: Switch to bits/version.h for
 802         __cpp_lib_transparent_operators.
 803         (equal_to, not_equal_to, greater, less, greater_equal)
 804         (less_equal, bit_and, bit_or, bit_xor, bit_not, logical_and)
 805         (logical_or, logical_not, plus, minus, multiplies, divides)
 806         (modulus, negate): Guard '= void' fwdecls behind
 807         __cpp_lib_transparent_operators.
 808         (plus<void>, minus<void>, multiplies<void>, divides<void>)
 809         (modulus<void>, negate<void>, logical_and<void>, logical_or<void>)
 810         (logical_not<void>, bit_and<void>, bit_or<void>, bit_xor<void>)
 811         (equal_to<void>, not_equal_to<void>, greater<void>, less<void>)
 812         (greater_equal<void>, less_equal<void>, bit_not<void>)
 813         (__has_is_transparent): Guard behind
 814         __cpp_lib_transparent_operators.
 815         * include/bits/stl_algobase.h: Switch to bits/version.h for
 816         __cpp_lib_robust_nonmodifying_seq_ops.
 817         (robust equal, mismatch): Guard behind
 818         __cpp_lib_nonmember_container_access.
 819         * include/bits/stl_algo.h: Swtich to bits/version.h for
 820         __cpp_lib_{clamp,sample}.
 821         (clamp): Guard behind __cpp_lib_clamp.
 822         (sample): Guard behind __cpp_lib_sample.
 823         * include/bits/specfun.h: Switch to bits/version.h for
 824         __cpp_lib_math_special_functions and __STDCPP_MATH_SPEC_FUNCS__.
 825         * include/bits/shared_ptr_base.h: Switch to bits/version.h for
 826         __cpp_lib_{smart_ptr_for_overwrite,shared_ptr_arrays}.
 827         (_Sp_overwrite_tag): Guard behind
 828         __cpp_lib_smart_ptr_for_overwrite.
 829         * include/bits/shared_ptr_atomic.h: Switch to bits/version.h for
 830         __cpp_lib_atomic_shared_ptr.
 831         * include/bits/shared_ptr.h: Switch to bits/version.h for
 832         __cpp_lib_{enable_shared_from_this,shared_ptr_weak_type}.
 833         (shared_ptr<T>::weak_type): Guard behind
 834         __cpp_lib_shared_ptr_weak_type.
 835         (enable_shared_from_this<T>::weak_from_this): Guard behind
 836         __cpp_lib_enable_shared_from_this.
 837         * include/bits/ranges_cmp.h: Switch to bits/version.h for
 838         __cpp_lib_ranges.
 839         * include/bits/ranges_algo.h: Switch to bits/version.h for
 840         __cpp_lib_{shift,ranges_{contains,find_last,fold,iota}}.
 841         * include/bits/range_access.h: Switch to bits/version.h for
 842         __cpp_lib_nonmember_container_access
 843         (size, empty, data): Guard behind
 844         __cpp_lib_nonmember_container_access.
 845         (ssize): Guard behind __cpp_lib_ssize.
 846         * include/bits/ptr_traits.h: Switch to bits/version.h. for
 847         __cpp_lib_{constexpr_memory,to_address}.
 848         (to_address): Guard behind __cpp_lib_to_address.
 849         * include/bits/node_handle.h: Switch to bits/version.h for
 850         __cpp_lib_node_extract.  Guard header behind that FTM.
 851         * include/bits/move_only_function.h: Switch to bits/version.h for
 852         __cpp_lib_move_only_function.  Guard header behind that FTM.
 853         * include/bits/move.h: Switch to bits/version.h for
 854         __cpp_lib_addressof_constexpr.
 855         * include/bits/ios_base.h: Switch to bits/version.h for
 856         __cpp_lib_ios_noreplace.
 857         (noreplace): Guard with __cpp_lib_ios_noreplace.
 858         * include/bits/hashtable.h: Switch to bits/version.h for
 859         __cpp_lib_generic_unordered_lookup.
 860         (_M_equal_range_tr, _M_count_tr, _M_find_tr): Guard behind
 861         __cpp_lib_generic_unordered_lookup.
 862         * include/bits/forward_list.h: Switch to bits/version.h for
 863         __cpp_lib_list_remove_return_type.
 864         (__remove_return_type): Guard behind
 865         __cpp_lib_list_remove_return_type.
 866         * include/bits/erase_if.h: Switch to bits/version.h for
 867         __cpp_lib_erase_if.
 868         * include/bits/cow_string.h: Switch to bits/version.h for
 869         __cpp_lib_constexpr_string.
 870         * include/bits/chrono.h: Swtich to bits/version.h for
 871         __cpp_lib_chrono{,_udls}.
 872         (ceil): Guard behind __cpp_lib_chrono.
 873         (operator""ns et al): Guard behind __cpp_lib_chrono_udls.
 874         * include/bits/char_traits.h: Switch to bits/version.h for
 875         __cpp_lib_constexpr_char_traits.
 876         * include/bits/basic_string.h: Switch to bits/version.h for
 877         __cpp_lib_{constexpr_string,string_{resize_and_overwrite,udls}}.
 878         (resize_and_overwrite): Guard behind
 879         __cpp_lib_string_resize_and_overwrite.
 880         (operator""s): Guard behind __cpp_lib_string_udls.
 881         * include/bits/atomic_wait.h: Switch to bits/version.h for
 882         __cpp_lib_atomic_wait.  Guard header behind that FTM.
 883         * include/bits/atomic_base.h: Switch to bits/version.h for
 884         __cpp_lib_atomic_value_initialization and
 885         __cpp_lib_atomic_flag_test.
 886         (atomic_flag::test): Guard behind __cpp_lib_atomic_flag_test,
 887         rather than C++20.
 888         * include/bits/allocator.h: Switch to bits/version.h for
 889         __cpp_lib_incomplete_container_elements.
 890         * include/bits/alloc_traits.h: Switch to using bits/version.h for
 891         __cpp_lib_constexpr_dynamic_alloc and
 892         __cpp_lib_allocator_traits_is_always_equal.
 893         * include/bits/align.h: Switch to bits/version.h for defining
 894         __cpp_lib_assume_aligned.
 895         (assume_aligned): Guard with __cpp_lib_assume_aligned.
 896         * include/bits/algorithmfwd.h: Switch to bits/version.h for
 897         defining __cpp_lib_constexpr_algorithms.
 898         * include/std/stacktrace: Switch to bits/version.h for
 899         __cpp_lib_stacktrace.  Guard header behind that FTM.
 900         * testsuite/23_containers/array/tuple_interface/get_neg.cc:
 901         Update line numbers.
 902
 903 2023-08-16  Arsen Arsenović  <arsen@aarsen.me>
 904
 905         * include/Makefile.am (bits_freestanding): Add version.h.
 906         (allcreated): Add version.h.
 907         (${bits_srcdir}/version.h): New rule.  Regenerates
 908         version.h out of version.{def,tpl}.
 909         * include/Makefile.in: Regenerate.
 910         * include/bits/version.def: New file.  Declares a list of
 911         all feature test macros, their values and their preconditions.
 912         * include/bits/version.tpl: New file.  Turns version.def
 913         into a sequence of #if blocks.
 914         * include/bits/version.h: New file.  Generated from
 915         version.def.
 916         * include/std/version: Replace with a __glibcxx_want_all define
 917         and bits/version.h include.
 918
 919 2023-08-14  Paul Dreik  <gccpatches@pauldreik.se>
 920
 921         PR libstdc++/110860
 922         * include/std/format (__formatter_fp::format): Use frexp instead
 923         of log10.
 924
 925 2023-08-12  Ken Matsui  <kmatsui@gcc.gnu.org>
 926
 927         * include/std/type_traits (true_type): Use __bool_constant
 928         instead.
 929         (false_type): Likewise.
 930         (bool_constant): Likewise.
 931
 932 2023-08-11  Jonathan Wakely  <jwakely@redhat.com>
 933
 934         PR libstdc++/110990
 935         * include/std/format (_Seq_sink::get): Only call _M_overflow if
 936         its precondition is met.
 937         (_Iter_sink::_M_finish): Likewise.
 938         (_Iter_sink<C, ContigIter>::_M_overflow): Only switch to the
 939         internal buffer after running out of space.
 940         (_Iter_sink<C, ContigIter>::_M_finish): Do not use _M_overflow.
 941         (_Counting_sink::count): Likewise.
 942         * testsuite/std/format/functions/format_to_n.cc: Check cases
 943         where the output fits into the buffer.
 944
 945 2023-08-11  Jonathan Wakely  <jwakely@redhat.com>
 946
 947         PR libstdc++/104167
 948         * include/bits/chrono_io.h (operator|=, operator|): Add noexcept
 949         to _ChronoParts operators.
 950         (from_stream, parse): Define new functions.
 951         (__detail::_Parse, __detail::_Parser): New class templates.
 952         * include/std/chrono (__cpp_lib_chrono): Define to 201907L for
 953         C++20.
 954         * include/std/version (__cpp_lib_chrono): Likewise.
 955         * testsuite/20_util/duration/arithmetic/constexpr_c++17.cc:
 956         Adjust expected value of feature test macro.
 957         * testsuite/20_util/duration/io.cc: Test parsing.
 958         * testsuite/std/time/clock/file/io.cc: Likewise.
 959         * testsuite/std/time/clock/gps/io.cc: Likewise.
 960         * testsuite/std/time/clock/system/io.cc: Likewise.
 961         * testsuite/std/time/clock/tai/io.cc: Likewise.
 962         * testsuite/std/time/clock/utc/io.cc: Likewise.
 963         * testsuite/std/time/day/io.cc: Likewise.
 964         * testsuite/std/time/month/io.cc: Likewise.
 965         * testsuite/std/time/month_day/io.cc: Likewise.
 966         * testsuite/std/time/weekday/io.cc: Likewise.
 967         * testsuite/std/time/year/io.cc: Likewise.
 968         * testsuite/std/time/year_month/io.cc: Likewise.
 969         * testsuite/std/time/year_month_day/io.cc: Likewise.
 970         * testsuite/std/time/syn_c++20.cc: Check value of macro and for
 971         the existence of parse and from_stream in namespace chrono.
 972         * testsuite/std/time/clock/local/io.cc: New test.
 973         * testsuite/std/time/parse.cc: New test.
 974
 975 2023-08-11  Jonathan Wakely  <jwakely@redhat.com>
 976
 977         PR libstdc++/110860
 978         * include/std/format (__formatter_fp::format): Do not call log10
 979         with zero values.
 980
 981 2023-08-11  Jonathan Wakely  <jwakely@redhat.com>
 982
 983         * python/libstdcxx/v6/printers.py (StdChronoCalendarPrinter):
 984         Check for out-of-range month an weekday indices.
 985         * testsuite/libstdc++-prettyprinters/chrono.cc: Check invalid
 986         month and weekday values.
 987
 988 2023-08-11  Jonathan Wakely  <jwakely@redhat.com>
 989
 990         * include/bits/stl_iterator.h (__clamped_iter_cat_t): Remove.
 991
 992 2023-08-10  Jonathan Wakely  <jwakely@redhat.com>
 993
 994         PR libstdc++/110974
 995         * include/std/format (_Spec::_S_parse_width_or_precision): Check
 996         for empty range before dereferencing iterator.
 997         * testsuite/std/format/string.cc: Check for expected exception.
 998         Fix expected exception message in test_pr110862() and actually
 999         call it.
1000
1001 2023-08-10  Jonathan Wakely  <jwakely@redhat.com>
1002
1003         PR libstdc++/110968
1004         * include/std/format (__formatter_fp::format): Check return
1005         value of _M_localize.
1006         * testsuite/std/format/functions/format.cc: Check classic
1007         locale.
1008
1009 2023-08-10  Jonathan Wakely  <jwakely@redhat.com>
1010
1011         PR libstdc++/110970
1012         * include/bits/stl_iterator.h (__detail::__move_iter_cat): Use
1013         __iter_category_t.
1014         (iterator_traits<common_iterator<I, S>>::_S_iter_cat): Likewise.
1015         (__detail::__basic_const_iterator_iter_cat): Likewise.
1016         * include/bits/stl_iterator_base_types.h (__iterator_category_t):
1017         Rename to __iter_category_t.
1018
1019 2023-08-09  Jonathan Wakely  <jwakely@redhat.com>
1020
1021         * include/bits/chrono.h (duration_cast): Do not use braces
1022         around statements for C++11 constexpr rules.
1023         * include/bits/stl_algobase.h (__lg): Rewrite as a single
1024         statement for C++11 constexpr rules.
1025         * include/experimental/bits/fs_path.h (path::string): Use
1026         _GLIBCXX17_CONSTEXPR not _GLIBCXX_CONSTEXPR for 'if constexpr'.
1027         * include/std/charconv (__to_chars_8): Initialize variable for
1028         C++17 constexpr rules.
1029
1030 2023-08-09  Jonathan Wakely  <jwakely@redhat.com>
1031
1032         * include/bits/list.tcc (list::sort(Cmp)): Fix -Wsign-compare
1033         warning for loop condition.
1034
1035 2023-08-09  Jonathan Wakely  <jwakely@redhat.com>
1036
1037         * include/std/complex: Add diagnostic pragma for clang.
1038
1039 2023-08-09  Jonathan Wakely  <jwakely@redhat.com>
1040
1041         * include/bits/shared_ptr_atomic.h (atomic): Change class-head
1042         to struct.
1043         * include/bits/stl_tree.h (_Rb_tree_merge_helper): Change
1044         class-head to struct in friend declaration.
1045         * include/std/chrono (tzdb_list::_Node): Likewise.
1046         * include/std/future (_Task_state_base, _Task_state): Likewise.
1047         * include/std/scoped_allocator (__inner_type_impl): Likewise.
1048         * include/std/valarray (_BinClos, _SClos, _GClos, _IClos)
1049         (_ValFunClos, _RefFunClos): Change class-head to struct.
1050
1051 2023-08-09  Jonathan Wakely  <jwakely@redhat.com>
1052
1053         * include/bits/alloc_traits.h (allocate): Add [[maybe_unused]]
1054         attribute.
1055         * include/bits/regex_executor.tcc: Remove name of unused
1056         parameter.
1057         * include/bits/shared_ptr_atomic.h (atomic_is_lock_free):
1058         Likewise.
1059         * include/bits/stl_uninitialized.h: Likewise.
1060         * include/bits/streambuf_iterator.h (operator==): Likewise.
1061         * include/bits/uses_allocator.h: Likewise.
1062         * include/c_global/cmath (isfinite, isinf, isnan): Likewise.
1063         * include/std/chrono (zoned_time): Likewise.
1064         * include/std/future (__future_base::_S_allocate_result):
1065         Likewise.
1066         (packaged_task): Likewise.
1067         * include/std/optional (_Optional_payload_base): Likewise.
1068         * include/std/scoped_allocator (__inner_type_impl): Likewise.
1069         * include/std/tuple (_Tuple_impl): Likewise.
1070
1071 2023-08-09  Jonathan Wakely  <jwakely@redhat.com>
1072
1073         * include/bits/new_allocator.h (__new_allocator): Define copy
1074         assignment operator as defaulted.
1075         * include/std/complex (complex<float>, complex<double>)
1076         (complex<long double>): Define copy constructor as defaulted.
1077
1078 2023-08-09  Jonathan Wakely  <jwakely@redhat.com>
1079
1080         * include/std/format: Fix some warnings.
1081         (__format::__write(Ctx&, basic_string_view<CharT>)): Remove
1082         unused function template.
1083
1084 2023-08-07  Jonathan Wakely  <jwakely@redhat.com>
1085
1086         PR libstdc++/110860
1087         * include/std/format (__formatter_fp::format): Do not use
1088         __builtin_abs and __builtin_log10 with arbitrary floating-point
1089         types.
1090
1091 2023-08-07  Jonathan Wakely  <jwakely@redhat.com>
1092
1093         PR libstdc++/110917
1094         * include/std/format (__format::_Iter_sink<CharT, OutIter>):
1095         Constrain partial specialization for contiguous iterators to
1096         require the value type to be CharT.
1097         * testsuite/std/format/functions/format_to.cc: New test.
1098
1099 2023-08-07  Jonathan Wakely  <jwakely@redhat.com>
1100
1101         PR libstdc++/110862
1102         * include/std/format (_Scanner::_M_on_replacement_field):
1103         Check for expected '}' before incrementing iterator.
1104         * testsuite/std/format/string.cc: Check "{0:{0}" format string.
1105
1106 2023-08-07  Nick Alcock  <nick.alcock@oracle.com>
1107
1108         * configure: Regenerate.
1109
1110 2023-08-07  Alan Modra  <amodra@gmail.com>
1111
1112         * configure: Regenerate.
1113
1114 2023-08-07  Alexander von Gluck IV  <kallisti5@unixzen.com>
1115
1116         * configure: Regenerate.
1117
1118 2023-08-07  Nick Alcock  <nick.alcock@oracle.com>
1119
1120         * configure: Regenerate.
1121
1122 2023-08-07  Nick Alcock  <nick.alcock@oracle.com>
1123
1124         * configure: Regenerate.
1125
1126 2023-08-07  H.J. Lu  <hjl.tools@gmail.com>
1127
1128         * configure: Regenerate.
1129
1130 2023-08-07  H.J. Lu  <hjl.tools@gmail.com>
1131
1132         * configure: Regenerate.
1133
1134 2023-08-06  François Dumont  <fdumont@gcc.gnu.org>
1135
1136         * config/abi/pre/gnu-versioned-namespace.ver: Add __cxa_call_terminate
1137         symbol export.
1138
1139 2023-07-30  François Dumont  <fdumont@gcc.gnu.org>
1140
1141         * src/c++11/compatibility-ldbl-facets-aliases.h: Replace #define with
1142         proper #error.
1143         * src/c++11/locale-inst-monetary.h: Likewise.
1144         * src/c++11/locale-inst-numeric.h: Likewise.
1145
1146 2023-07-27  Jonathan Wakely  <jwakely@redhat.com>
1147
1148         PR libstdc++/108046
1149         * include/std/format (__formatter_fp::format): Ensure __expc is
1150         always set for all presentation types. Set __z correctly for
1151         zero precision.
1152         * testsuite/std/format/functions/format.cc: Check problem cases.
1153
1154 2023-07-26  Jonathan Wakely  <jwakely@redhat.com>
1155
1156         PR libstdc++/110807
1157         * testsuite/23_containers/vector/bool/110807.cc: Require c++11.
1158
1159 2023-07-26  Jonathan Wakely  <jwakely@redhat.com>
1160
1161         PR libstdc++/110807
1162         * include/bits/stl_bvector.h (vector(const vector&)): Access
1163         iterators before allocating.
1164         * include/bits/vector.tcc (vector<bool>::_M_insert_range):
1165         Likewise.
1166         * testsuite/23_containers/vector/bool/110807.cc: New test.
1167
1168 2023-07-26  Jonathan Wakely  <jwakely@redhat.com>
1169
1170         * include/bits/algorithmfwd.h (random_shuffle): Add deprecated
1171         attribute.
1172         * include/bits/stl_algo.h (random_shuffle): Correct comments.
1173         * testsuite/25_algorithms/random_shuffle/1.cc: Disable
1174         deprecated warnings.
1175         * testsuite/25_algorithms/random_shuffle/59603.cc: Likewise.
1176         * testsuite/25_algorithms/random_shuffle/moveable.cc: Likewise.
1177         * testsuite/25_algorithms/random_shuffle/deprecated.cc: New
1178         test.
1179
1180 2023-07-26  Nathaniel Shead  <nathanieloshead@gmail.com>
1181
1182         * testsuite/25_algorithms/equal/constexpr_neg.cc: Update diagnostic
1183         locations.
1184         * testsuite/26_numerics/gcd/105844.cc: Likewise.
1185         * testsuite/26_numerics/lcm/105844.cc: Likewise.
1186
1187 2023-07-24  Deev Patel  <pateldeev@nevada.unr.edu>
1188
1189         * include/std/format (_Formatting_scanner::_M_on_chars): Add
1190         missing constexpr specifier.
1191         (_Formatting_scanner::_M_format_arg): Likewise.
1192
1193 2023-07-24  Jonathan Wakely  <jwakely@redhat.com>
1194
1195         PR libstdc++/110653
1196         * include/bits/basic_string.h [!HAVE_STOF] (stof): Do not
1197         throw an exception for zero result.
1198         [HAVE_BROKEN_STRTOLD] (stold): Do not use strtold.
1199
1200 2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
1201
1202         PR libstdc++/110077
1203         * src/c++17/floating_from_chars.cc (from_chars): Only define
1204         _Float128 overload when using __strfromf128.
1205
1206 2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
1207
1208         PR libstdc++/110593
1209         * include/bits/chrono.h (duration): Improve static assert
1210         messages.
1211         (__is_ratio): Move to ...
1212         * include/std/ratio (__is_ratio): ... here.
1213         (__is_ratio_v): New variable template and partial
1214         specialization.
1215         (__are_both_ratios): New function template.
1216         (__ratio_multiply, ratio_equal, ratio_less, __ratio_add):
1217         Add static assertion.
1218         * testsuite/20_util/ratio/requirements/type_constraints.cc:
1219         New test.
1220         * testsuite/20_util/duration/requirements/typedefs_neg1.cc:
1221         Adjust expected error.
1222         * testsuite/20_util/duration/requirements/typedefs_neg2.cc:
1223         Likewise.
1224
1225 2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
1226
1227         * include/bits/chrono_io.h (__formatter_chrono::_M_format):
1228         Do not set __is_neg for hh_mm_ss before calling
1229         _M_format_to_ostream. Change __print_sign lambda to only check
1230         __is_neg for durations and hh_mm_ss types.
1231         (__formatter_chrono::_M_format_to_ostream): Only check __is_neg
1232         for duration types.
1233         * testsuite/std/time/hh_mm_ss/io.cc: Check negative values.
1234
1235 2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
1236
1237         PR libstdc++/110719
1238         * include/bits/chrono_io.h (__formatter_chrono::_S_floor_seconds):
1239         Handle duration and hh_mm_ss.
1240         * testsuite/20_util/duration/io.cc: Check locale-specific
1241         formats.
1242         * testsuite/std/time/hh_mm_ss/io.cc: Likewise.
1243
1244 2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
1245
1246         * include/std/format (__write_padded): Initialize first element
1247         of array to avoid a -Wmaybe-uninitialized warning.
1248
1249 2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
1250
1251         PR libstdc++/110719
1252         * include/bits/chrono_io.h (__formatter_chrono::_M_parse): Fix
1253         allowed modifiers for %z and %Z. Fix -Wparentheses and
1254         -Wnarrowing warnings.
1255         (__formatter_chrono::_M_format): Call new functions for %d, %e,
1256         %H, %I, %m and %M.
1257         (__formatter_chrono::_M_c): Use _S_floor_seconds to remove
1258         subsecond precision.
1259         (__formatter_chrono::_M_C_y_Y): Use _M_locale_fmt to handle
1260         modifiers.
1261         (__formatter_chrono::_M_e): Replace with _M_d_e and use
1262         _M_locale_fmt.
1263         (__formatter_chrono::_M_I): Replace with _M_H_I and use
1264         _M_locale_fmt.
1265         (__formatter_chrono::_M_m): New function.
1266         (__formatter_chrono::_M_M): New function.
1267         (__formatter_chrono::_M_r): Use _M_locale_fmt.
1268         (__formatter_chrono::_M_S): Likewise.
1269         (__formatter_chrono::_M_u_w): Likewise.
1270         (__formatter_chrono::_M_U_V_W): Likewise.
1271         (__formatter_chrono::_M_X): Use _S_floor_seconds.
1272         (__formatter_chrono::_M_Z): Fix untested branch for wchar_t.
1273         (__formatter_chrono::_S_altnum): Remove function.
1274         (__formatter_chrono::_S_dd_zero_fill): Remove function.
1275         (__formatter_chrono::_S_floor_seconds): New function.
1276         (__formatter_chrono::_M_locale_fmt): New function.
1277         * testsuite/std/time/clock/system/io.cc: Adjust expected output
1278         for locale-specific formats and check modified formats.
1279         * testsuite/std/time/clock/utc/io.cc: Likewise.
1280         * testsuite/std/time/zoned_time/io.cc: New test.
1281
1282 2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
1283
1284         PR libstdc++/110708
1285         * include/bits/chrono_io.h (__formatter_chrono::_M_parse): Only
1286         allow a single modifier.
1287         * testsuite/std/time/format.cc: Check multiple modifiers.
1288
1289 2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
1290
1291         PR libstdc++/110653
1292         * testsuite/21_strings/basic_string/numeric_conversions/char/stod.cc:
1293         Remove dg-require-string-conversions.
1294         * testsuite/21_strings/basic_string/numeric_conversions/char/stof.cc:
1295         Likewise.
1296         * testsuite/21_strings/basic_string/numeric_conversions/char/stoi.cc:
1297         Likewise.
1298         * testsuite/21_strings/basic_string/numeric_conversions/char/stol.cc:
1299         Likewise.
1300         * testsuite/21_strings/basic_string/numeric_conversions/char/stoul.cc:
1301         Likewise.
1302
1303 2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
1304
1305         PR libstdc++/110653
1306         * include/bits/basic_string.h [!_GLIBCXX_HAVE_STRTOF] (stof):
1307         Define in terms of std::stod.
1308
1309 2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
1310
1311         PR libstdc++/110653
1312         * include/bits/basic_string.h [_GLIBCXX_HAVE_STRTOF] (stof):
1313         Define.
1314         [_GLIBCXX_HAVE_STRTOLD] (stold): Define.
1315         * include/c_global/cstdlib [_GLIBCXX_HAVE_STRTOF] (strtof):
1316         Declare in namespace std.
1317         [_GLIBCXX_HAVE_STRTOLD] (strtold): Likewise.
1318
1319 2023-07-13  Jonathan Wakely  <jwakely@redhat.com>
1320
1321         PR libstdc++/110653
1322         * include/bits/basic_string.h (stoi, stol, stoul, stod): Do not
1323         depend on _GLIBCXX_USE_C99_STDLIB.
1324         [__LONG_WIDTH__ == __LONG_LONG_WIDTH__] (stoll, stoull): Define
1325         in terms of stol and stoul respectively.
1326         [__DBL_MANT_DIG__ == __LDBL_MANT_DIG__] (stold): Define in terms
1327         of stod.
1328
1329 2023-07-12  Jonathan Wakely  <jwakely@redhat.com>
1330
1331         PR libstdc++/95048
1332         * testsuite/27_io/filesystem/path/construct/95048.cc: Check
1333         conversions to wide strings.
1334         * testsuite/experimental/filesystem/path/construct/95048.cc:
1335         Likewise.
1336
1337 2023-07-12  Jonathan Wakely  <jwakely@redhat.com>
1338
1339         * config/io/basic_file_stdio.cc: Define LFS macros.
1340         (__basic_file<char>::open): Use fopen unconditionally.
1341         (get_file_offset): Use lseek unconditionally.
1342         (__basic_file<char>::seekoff): Likewise.
1343         (__basic_file<char>::showmanyc): Use fstat unconditionally.
1344
1345 2023-07-12  Jonathan Wakely  <jwakely@redhat.com>
1346
1347         PR libstdc++/110574
1348         * acinclude.m4 (GLIBCXX_CHECK_LFS): Check for fseeko and ftello
1349         and define _GLIBCXX_USE_FSEEKO_FTELLO.
1350         * config.h.in: Regenerate.
1351         * configure: Regenerate.
1352         * config/io/basic_file_stdio.cc (xwrite) [_GLIBCXX_USE_STDIO_PURE]:
1353         Check for fwrite error correctly.
1354         (__basic_file<char>::xsgetn) [_GLIBCXX_USE_STDIO_PURE]: Check for
1355         fread error correctly.
1356         (get_file_offset): New function.
1357         (__basic_file<char>::seekoff) [_GLIBCXX_USE_STDIO_PURE]: Use
1358         fseeko if available. Use get_file_offset instead of return value
1359         of fseek.
1360         (__basic_file<char>::showmanyc): Use get_file_offset.
1361
1362 2023-07-12  Ken Matsui  <kmatsui@gcc.gnu.org>
1363
1364         * include/std/type_traits (__make_unsigned_selector): Use
1365         __is_enum built-in trait.
1366         (__make_signed_selector): Likewise.
1367         (__underlying_type_impl): Likewise.
1368
1369 2023-07-06  Tianqiang Shuai  <1101282468@qq.com>
1370
1371         * config/io/basic_file_stdio.cc (xwrite) [USE_STDIO_PURE]: Fix
1372         first argument.
1373
1374 2023-07-06  Jonathan Wakely  <jwakely@redhat.com>
1375
1376         PR libstdc++/110574
1377         * doc/xml/manual/configure.xml: Describe stdio_pure argument to
1378         --enable-cstdio.
1379         * doc/html/manual/configure.html: Regenerate.
1380
1381 2023-07-05  Thomas Rodgers  <trodgers@redhat.com>
1382
1383         * testsuite/25_algorithms/pstl/alg_sorting/set.cc: Delete
1384         file.
1385         * testsuite/25_algorithms/pstl/alg_sorting/set_difference.cc:
1386         New file.
1387         * testsuite/25_algorithms/pstl/alg_sorting/set_intersection.cc:
1388         Likewise.
1389         * testsuite/25_algorithms/pstl/alg_sorting/set_symmetric_difference.cc:
1390         Likewise.
1391         * testsuite/25_algorithms/pstl/alg_sorting/set_union.cc:
1392         Likewise.
1393         * testsuite/25_algorithms/pstl/alg_sorting/set_util.h:
1394         Likewise.
1395
1396 2023-07-05  Jonathan Wakely  <jwakely@redhat.com>
1397
1398         * testsuite/23_containers/forward_list/debug/iterator1_neg.cc:
1399         Skip as UNSUPPORTED for C++98 mode.
1400         * testsuite/23_containers/forward_list/debug/iterator3_neg.cc:
1401         Likewise.
1402
1403 2023-07-05  Jonathan Wakely  <jwakely@redhat.com>
1404
1405         PR libstdc++/110542
1406         * include/bits/stl_uninitialized.h (__uninitialized_default_n):
1407         Do not use std::fill_n during constant evaluation.
1408
1409 2023-07-05  Jonathan Wakely  <jwakely@redhat.com>
1410
1411         * include/bits/vector.tcc (_M_default_append): Replace try-block
1412         with RAII types.
1413
1414 2023-07-05  Jonathan Wakely  <jwakely@redhat.com>
1415
1416         * include/bits/iterator_concepts.h (projected): Add typename.
1417
1418 2023-07-03  Jonathan Wakely  <jwakely@redhat.com>
1419
1420         * testsuite/27_io/headers/iosfwd/synopsis.cc: Make wsyncbuf and
1421         wosyncstream depend on _GLIBCXX_USE_CXX11_ABI.
1422
1423 2023-07-03  Jonathan Wakely  <jwakely@redhat.com>
1424
1425         * include/pstl/pstl_config.h (_PSTL_PRAGMA_SIMD_SCAN,
1426         _PSTL_PRAGMA_SIMD_INCLUSIVE_SCAN, _PSTL_PRAGMA_SIMD_EXCLUSIVE_SCAN):
1427         Define to OpenMP 5.0 pragmas even for GCC 10.0+.
1428         (_PSTL_UDS_PRESENT): Define to 1 for GCC 10.0+.
1429
1430 2023-07-03  Jonathan Wakely  <jwakely@redhat.com>
1431
1432         * include/bits/alloc_traits.h (_Destroy): Qualify call.
1433         * include/bits/stl_construct.h (_Destroy, _Destroy_n): Likewise.
1434         * testsuite/23_containers/vector/cons/destroy-adl.cc: New test.
1435
1436 2023-07-03  Iain Sandoe  <iain@sandoe.co.uk>
1437
1438         * testsuite/lib/libstdc++.exp: Remove additional flag handled
1439         by Darwin specs.
1440
1441 2023-06-30  Jonathan Wakely  <jwakely@redhat.com>
1442
1443         PR libstdc++/110432
1444         * acinclude.m4 (GLIBCXX_CHECK_INIT_PRIORITY): New.
1445         * config.h.in: Regenerate.
1446         * configure: Regenerate.
1447         * configure.ac: Use GLIBCXX_CHECK_INIT_PRIORITY.
1448         * include/std/iostream: Use new autoconf macro as well as
1449         __has_attribute.
1450         * src/c++98/ios_base_init.h: Use new autoconf macro instead of
1451         __has_attribute.
1452
1453 2023-06-30  Jonathan Wakely  <jwakely@redhat.com>
1454
1455         * src/c++11/random.cc (random_device::_M_init): Add maybe_unused
1456         attribute.
1457
1458 2023-06-30  Jonathan Wakely  <jwakely@redhat.com>
1459
1460         PR libstdc++/105081
1461         * src/c++11/random.cc (random_device::_M_init): Throw
1462         std::system_error when the requested device is a valid token but
1463         not available at runtime.
1464
1465 2023-06-30  Hans-Peter Nilsson  <hp@axis.com>
1466
1467         PR libstdc++/108672
1468         * include/pstl/unseq_backend_simd.h (__simd_or): Re-apply using
1469         __INT32_TYPE__ instead of int32_t.
1470
1471 2023-06-29  Jonathan Wakely  <jwakely@redhat.com>
1472
1473         * src/c++20/tzdb.cc (USE_ATOMIC_SHARED_PTR): Define consistently
1474         with USE_ATOMIC_LIST_HEAD.
1475         (list_mutex): Replace global object with function. Use local
1476         static object when std::mutex constructor isn't constexpr.
1477
1478 2023-06-29  Jonathan Wakely  <jwakely@redhat.com>
1479
1480         PR libstdc++/110462
1481         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check that
1482         copy_file_range can be called with loff_t* arguments.
1483         * configure: Regenerate.
1484         * src/filesystem/ops-common.h (copy_file_copy_file_range):
1485         Use loff_t for offsets.
1486
1487 2023-06-29  Tom Tromey  <tromey@adacore.com>
1488
1489         * testsuite/lib/gdb-test.exp (gdb-test): Relax type-printer
1490         regexp.
1491
1492 2023-06-28  Jan Hubicka  <jh@suse.cz>
1493
1494         PR middle-end/109849
1495         * include/bits/c++config (std::__terminate): Mark cold.
1496         * include/bits/functexcept.h: Mark everything as cold.
1497         * libsupc++/exception: Mark terminate and unexpected as cold.
1498
1499 2023-06-26  Thomas Rodgers  <trodgers@redhat.com>
1500
1501         * include/pstl/algorithm_fwd.h: Synchronize with upstream.
1502         * include/pstl/algorithm_impl.h: Likewise.
1503         * include/pstl/execution_defs.h: Likewise.
1504         * include/pstl/execution_impl.h: Likewise.
1505         * include/pstl/glue_algorithm_impl.h: Likewise.
1506         * include/pstl/glue_execution_defs.h: Likewise.
1507         * include/pstl/glue_memory_impl.h: Likewise.
1508         * include/pstl/glue_numeric_impl.h: Likewise.
1509         * include/pstl/memory_impl.h: Likewise.
1510         * include/pstl/numeric_fwd.h: Likewise.
1511         * include/pstl/numeric_impl.h: Likewise.
1512         * include/pstl/parallel_backend.h: Likewise.
1513         * include/pstl/parallel_backend_serial.h: Likewise.
1514         * include/pstl/parallel_backend_tbb.h: Likewise.
1515         * include/pstl/parallel_impl.h: Likewise.
1516         * include/pstl/pstl_config.h: Likewise.
1517         * include/pstl/unseq_backend_simd.h: Likewise.
1518         * include/pstl/utils.h: Likewise.
1519         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc:
1520         Likewise.
1521         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc:
1522         Likewise.
1523         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc:
1524         Likewise.
1525         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc:
1526         Likewise.
1527         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: Likewise.
1528         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc:
1529         Likewise.
1530         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc:
1531         Likewise.
1532         * testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc:
1533         Likewise.
1534         * testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc:
1535         Likewise.
1536         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc:
1537         Likewise.
1538         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc:
1539         Likewise.
1540         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc:
1541         Likewise.
1542         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc:
1543         Likewise.
1544         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc:
1545         Likewise.
1546         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc:
1547         Likewise.
1548         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc:
1549         Likewise.
1550         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc:
1551         Likewise.
1552         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
1553         Likewise.
1554         * testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc:
1555         Likewise.
1556         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc:
1557         Likewise.
1558         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc:
1559         Likewise.
1560         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc:
1561         Likewise.
1562         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc:
1563         Likewise.
1564         * testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc:
1565         Likewise.
1566         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc:
1567         Likewise.
1568         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc:
1569         Likewise.
1570         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc:
1571         Likewise.
1572         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc:
1573         Likewise.
1574         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc:
1575         Likewise.
1576         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc:
1577         Likewise.
1578         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc:
1579         Likewise.
1580         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc:
1581         Likewise.
1582         * testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc:
1583         Likewise.
1584         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc:
1585         Likewise.
1586         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc:
1587         Likewise.
1588         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc:
1589         Likewise.
1590         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc:
1591         Likewise.
1592         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc:
1593         Likewise.
1594         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc:
1595         Likewise.
1596         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc:
1597         Likewise.
1598         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc:
1599         Likewise.
1600         * testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc:
1601         Likewise.
1602         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
1603         Likewise.
1604         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc:
1605         Likewise.
1606         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc:
1607         Likewise.
1608         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc:
1609         Likewise.
1610         * testsuite/25_algorithms/pstl/alg_sorting/set.cc:
1611         Likewise.
1612         * testsuite/25_algorithms/pstl/alg_sorting/sort.cc:
1613         Likewise.
1614         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc:
1615         Likewise.
1616         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc:
1617         Likewise.
1618         * testsuite/26_numerics/pstl/numeric_ops/scan.cc:
1619         Likewise.
1620         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc:
1621         Likewise.
1622         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc:
1623         Likewise.
1624         * testsuite/util/pstl/test_utils.h:
1625         Likewise.
1626
1627 2023-06-26  Jonathan Wakely  <jwakely@redhat.com>
1628
1629         PR libstdc++/110239
1630         * include/std/format (__format::__parse_integer): Fix buffer
1631         overflow for wide chars.
1632         (formatter<const void*, C>::format): Cast to uintptr_t instead
1633         of uint64_t.
1634         * testsuite/std/format/string.cc: Test too-large widths.
1635
1636 2023-06-26  Jonathan Wakely  <jwakely@redhat.com>
1637
1638         * include/bits/iterator_concepts.h (projected): Replace class
1639         template with alias template denoting an ADL-proofed helper.
1640         (incremental_traits<projected<Iter, Proj>>): Remove.
1641         * testsuite/24_iterators/indirect_callable/projected-adl.cc:
1642         New test.
1643
1644 2023-06-26  Jonathan Wakely  <jwakely@redhat.com>
1645
1646         * include/debug/helper_functions.h (__get_distance)
1647         (__check_singular, __valid_range_aux, __valid_range): Qualify
1648         calls to disable ADL.
1649         (__check_singular_aux(const _Safe_iterator_base*)): Declare
1650         overload that was previously found via ADL.
1651
1652 2023-06-23  Jonathan Wakely  <jwakely@redhat.com>
1653
1654         * include/bits/vector.tcc (_M_realloc_insert): Replace try-block
1655         with RAII types.
1656
1657 2023-06-20  Jonathan Wakely  <jwakely@redhat.com>
1658
1659         * include/std/array (to_array(T(&)[N])): Remove redundant
1660         condition.
1661         (to_array(T(&&)[N])): Remove redundant std::move.
1662
1663 2023-06-16  Alexandre Oliva  <oliva@adacore.com>
1664
1665         * testsuite/20_util/from_chars/4.cc: Skip long double on
1666         aarch64-rtems.
1667
1668 2023-06-16  Joel Brobecker  <brobecker@adacore.com>
1669
1670         * configure.ac ["x${with_newlib}" = "xyes"]: Define
1671         HAVE_HYPOTF.  Add compile-checks for various long double
1672         math functions as well.
1673         * configure: Regenerate.
1674
1675 2023-06-14  Jonny Grant  <jg@jguk.org>
1676
1677         * doc/xml/manual/extensions.xml: Remove demangle exception
1678         description and include.
1679         * doc/html/manual/ext_demangling.html: Regenerate.
1680
1681 2023-06-10  Hans-Peter Nilsson  <hp@axis.com>
1682
1683         * testsuite/27_io/basic_istream/ignore/wchar_t/94749.cc (main)
1684         [! SIMULATOR_TEST]: Also exclude running test05.
1685         * testsuite/27_io/basic_istream/ignore/char/94749.cc: Ditto.
1686
1687 2023-06-09  Ken Matsui  <kmatsui@cs.washington.edu>
1688
1689         * include/std/type_traits: Use using instead of typedef
1690
1691 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
1692
1693         PR libstdc++/110077
1694         * src/c++17/floating_from_chars.cc (from_chars) <_Float128>:
1695         Only define if _Float128 and long double have different
1696         representations.
1697
1698 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
1699
1700         PR libstdc++/100285
1701         * include/experimental/internet [IPPROTO_TCP || IPPROTO_UDP]
1702         (basic_endpoint, basic_resolver_entry, resolver_base)
1703         (basic_resolver_results, basic_resolver): Only define if the tcp
1704         or udp protocols will be defined.
1705
1706 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
1707
1708         * acinclude.m4 (libtool_VERSION): Update to 6.0.33.
1709         * configure: Regenerate.
1710         * doc/xml/manual/abi.xml: Add libstdc++.so.6.0.33.
1711         * doc/html/manual/abi.html: Regenerate.
1712
1713 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
1714
1715         PR libstdc++/110149
1716         * include/std/format (formatter<const void*, charT>::parse):
1717         Only alow 0 and P for C++26 and non-strict modes.
1718         (formatter<const void*, charT>::format): Use toupper for P
1719         type, and insert zero-fill characters for 0 option.
1720         * testsuite/std/format/functions/format.cc: Check pointer
1721         formatting. Only check P2510R3 extensions conditionally.
1722         * testsuite/std/format/parse_ctx.cc: Only check P2510R3
1723         extensions conditionally.
1724
1725 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
1726
1727         PR libstdc++/110167
1728         * include/std/array (to_array): Initialize arrays of trivial
1729         types using memcpy. For non-trivial types, use lambda
1730         expressions instead of a separate helper function.
1731         (__to_array): Remove.
1732         * testsuite/23_containers/array/creation/110167.cc: New test.
1733
1734 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
1735
1736         * testsuite/23_containers/deque/modifiers/emplace/52799.cc:
1737         Removed.
1738         * testsuite/23_containers/deque/modifiers/emplace/const_iterator.cc:
1739         Removed.
1740         * testsuite/23_containers/list/modifiers/emplace/52799.cc:
1741         Removed.
1742         * testsuite/23_containers/list/modifiers/emplace/const_iterator.cc:
1743         Removed.
1744         * testsuite/23_containers/vector/modifiers/emplace/52799.cc:
1745         Removed.
1746         * testsuite/23_containers/vector/modifiers/emplace/const_iterator.cc:
1747         Removed.
1748         * testsuite/23_containers/deque/modifiers/emplace/1.cc: New
1749         test.
1750         * testsuite/23_containers/list/modifiers/emplace/1.cc: New
1751         test.
1752         * testsuite/23_containers/vector/modifiers/emplace/1.cc: New
1753         test.
1754
1755 2023-06-07  Jakub Jelinek  <jakub@redhat.com>
1756
1757         PR libstdc++/110145
1758         * testsuite/20_util/to_chars/double.cc: Include <cfloat>.
1759         (double_to_chars_test_cases,
1760         double_scientific_precision_to_chars_test_cases_2,
1761         double_fixed_precision_to_chars_test_cases_2): #if out 1e126, 4.91e-6
1762         and 5.547e-6 tests if FLT_EVAL_METHOD is negative or larger than 1.
1763         Add unconditional tests with corresponding double constants
1764         0x1.7a2ecc414a03fp+418, 0x1.4981285e98e79p-18 and
1765         0x1.7440bbff418b9p-18.
1766
1767 2023-06-07  Jonathan Wakely  <jwakely@redhat.com>
1768
1769         * testsuite/util/testsuite_abi.cc (check_version): Re-add
1770         CXXABI_1.3.14.
1771
1772 2023-06-07  Jonathan Wakely  <jwakely@redhat.com>
1773
1774         * testsuite/18_support/nested_exception/rethrow_if_nested-term.cc:
1775         Require effective target exceptions_enabled instead of using
1776         dg-skip-if.
1777         * testsuite/23_containers/vector/capacity/constexpr.cc: Expect
1778         shrink_to_fit() to be a no-op without exceptions enabled.
1779         * testsuite/23_containers/vector/capacity/shrink_to_fit.cc:
1780         Likewise.
1781         * testsuite/ext/bitmap_allocator/check_allocate_max_size.cc:
1782         Require effective target exceptions_enabled.
1783         * testsuite/ext/malloc_allocator/check_allocate_max_size.cc:
1784         Likewise.
1785         * testsuite/ext/mt_allocator/check_allocate_max_size.cc:
1786         Likewise.
1787         * testsuite/ext/new_allocator/check_allocate_max_size.cc:
1788         Likewise.
1789         * testsuite/ext/pool_allocator/check_allocate_max_size.cc:
1790         Likewise.
1791         * testsuite/ext/throw_allocator/check_allocate_max_size.cc:
1792         Likewise.
1793
1794 2023-06-07  Jonathan Wakely  <jwakely@redhat.com>
1795
1796         * testsuite/20_util/duration/cons/2.cc: Use values that aren't
1797         affected by rounding.
1798         * testsuite/20_util/from_chars/5.cc: Cast arithmetic result to
1799         double before comparing for equality.
1800         * testsuite/20_util/from_chars/6.cc: Likewise.
1801         * testsuite/20_util/variant/86874.cc: Use values that aren't
1802         affected by rounding.
1803         * testsuite/25_algorithms/lower_bound/partitioned.cc: Compare to
1804         original value instead of to floating-point-literal.
1805         * testsuite/26_numerics/random/discrete_distribution/cons/range.cc:
1806         Cast arithmetic result to double before comparing for equality.
1807         * testsuite/26_numerics/random/piecewise_constant_distribution/cons/range.cc:
1808         Likewise.
1809         * testsuite/26_numerics/random/piecewise_linear_distribution/cons/range.cc:
1810         Likewise.
1811         * testsuite/26_numerics/valarray/transcend.cc (eq): Check that
1812         the absolute difference is less than 0.01 instead of comparing
1813         to two decimal places.
1814         * testsuite/27_io/basic_istream/extractors_arithmetic/char/01.cc:
1815         Cast arithmetic result to double before comparing for equality.
1816         * testsuite/27_io/basic_istream/extractors_arithmetic/char/09.cc:
1817         Likewise.
1818         * testsuite/27_io/basic_istream/extractors_arithmetic/char/10.cc:
1819         Likewise.
1820         * testsuite/27_io/basic_istream/extractors_arithmetic/wchar_t/01.cc:
1821         Likewise.
1822         * testsuite/27_io/basic_istream/extractors_arithmetic/wchar_t/09.cc:
1823         Likewise.
1824         * testsuite/27_io/basic_istream/extractors_arithmetic/wchar_t/10.cc:
1825         Likewise.
1826         * testsuite/ext/random/hoyt_distribution/cons/parms.cc: Likewise.
1827
1828 2023-06-07  Jonathan Wakely  <jwakely@redhat.com>
1829
1830         Revert:
1831         2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
1832
1833         * configure.ac: Use AS_IF.
1834         * configure: Regenerate.
1835
1836 2023-06-07  Thomas Schwinge  <thomas@codesourcery.com>
1837
1838         * testsuite/lib/prune.exp (libstdc++-dg-prune): Support
1839         'UNSUPPORTED: [...]: exception handling disabled'.
1840
1841 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
1842
1843         * testsuite/util/testsuite_abi.cc (check_version): Add
1844         CXXABI_1.3.15 symver and make it the latestp. Remove
1845         GLIBCXX_IEEE128_3.4.31 and GLIBCXX_LDBL_3.4.31 from latestp.
1846
1847 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
1848             Jakub Jelinek  <jakub@redhat.com>
1849
1850         PR libstdc++/104772
1851         * include/std/limits: (numeric_limits<__float128>): Define
1852         for __STRICT_ANSI__ as well.
1853         * testsuite/18_support/numeric_limits/128bit.cc: Remove
1854         check for __STRICT_ANSI__.
1855
1856 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
1857
1858         * configure.ac: Use AS_IF.
1859         * configure: Regenerate.
1860
1861 2023-06-06  Matthias Kretz  <m.kretz@gsi.de>
1862
1863         PR libstdc++/109822
1864         * include/experimental/bits/simd_builtin.h (_S_store): Rewrite
1865         to avoid casts to other vector types. Implement store as
1866         succession of power-of-2 sized memcpy to avoid PR90424.
1867
1868 2023-06-06  Matthias Kretz  <m.kretz@gsi.de>
1869
1870         PR libstdc++/110054
1871         * include/experimental/bits/simd_builtin.h (_S_masked_store):
1872         Call into deduced ABI's SimdImpl after conversion.
1873         * include/experimental/bits/simd_x86.h (_S_masked_store_nocvt):
1874         Don't use _mm_maskmoveu_si128. Use the generic fall-back
1875         implementation. Also fix masked stores without SSE2, which
1876         were not doing anything before.
1877
1878 2023-06-06  Matthias Kretz  <m.kretz@gsi.de>
1879
1880         * include/experimental/bits/simd.h (__bit_cast): Use
1881         __gnu__::__vector_size__ instead of gnu::vector_size.
1882
1883 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
1884
1885         PR libstdc++/110139
1886         * include/std/array (__array_traits<T, 0>::operator T*()): Make
1887         conversion operator explicit.
1888         (array::front): Use size_type as subscript operand.
1889         (array::data): Use static_cast to make conversion explicit.
1890         * testsuite/23_containers/array/element_access/110139.cc: New
1891         test.
1892
1893 2023-06-06  Joseph Faulls  <Joseph.Faulls@imgtec.com>
1894
1895         * include/bits/locale_classes.tcc: Remove check for
1896         codecvt<char8_t, char, mbstate_t> facet.
1897
1898 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
1899
1900         * src/filesystem/ops-common.h (do_copy_file) [O_CLOEXEC]: Set
1901         close-on-exec flag on file descriptors.
1902
1903 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
1904
1905         PR libstdc++/108178
1906         * src/filesystem/ops-common.h (do_copy_file): Check for empty
1907         files by trying to read a character.
1908         * testsuite/27_io/filesystem/operations/copy_file_108178.cc:
1909         New test.
1910
1911 2023-06-06  Jannik Glückert  <jannik.glueckert@gmail.com>
1912
1913         * acinclude.m4 (_GLIBCXX_USE_COPY_FILE_RANGE): Define.
1914         * config.h.in: Regenerate.
1915         * configure: Regenerate.
1916         * src/filesystem/ops-common.h (copy_file_copy_file_range):
1917         Define new function.
1918         (do_copy_file): Use it.
1919
1920 2023-06-06  Jannik Glückert  <jannik.glueckert@gmail.com>
1921
1922         * acinclude.m4 (_GLIBCXX_HAVE_LSEEK): Define.
1923         * config.h.in: Regenerate.
1924         * configure: Regenerate.
1925         * src/filesystem/ops-common.h (copy_file_sendfile): Define new
1926         function for sendfile logic. Loop to support large files. Skip
1927         zero-length files.
1928         (do_copy_file): Use it.
1929
1930 2023-06-04  Jason Merrill  <jason@redhat.com>
1931
1932         PR c++/97720
1933         * libsupc++/eh_call.cc (__cxa_call_terminate): Take void*.
1934         * config/abi/pre/gnu.ver: Add it.
1935
1936 2023-06-02  François Dumont  <fdumont@gcc.gnu.org>
1937
1938         * include/parallel/algobase.h: Include <parallel/search.h>.
1939
1940 2023-06-01  Jonathan Wakely  <jwakely@redhat.com>
1941
1942         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc:
1943         Add const to equality operator.
1944
1945 2023-06-01  Jonathan Wakely  <jwakely@redhat.com>
1946
1947         * include/std/expected (expected::and_then, expected::or_else)
1948         (expected::transform_error): Use _M_val and _M_unex instead of
1949         calling value() and error(), as per LWG 3938.
1950         (expected::transform): Likewise. Remove incorrect std::move
1951         calls from lvalue overloads.
1952         (expected<void, E>::and_then, expected<void, E>::or_else)
1953         (expected<void, E>::transform): Use _M_unex instead of calling
1954         error().
1955         * testsuite/20_util/expected/lwg3877.cc: Add checks for and_then
1956         and transform, and for std::expected<void, E>.
1957         * testsuite/20_util/expected/lwg3938.cc: New test.
1958
1959 2023-06-01  Jonathan Wakely  <jwakely@redhat.com>
1960
1961         PR libstdc++/110060
1962         * include/bits/stl_vector.h (_Vector_base::_M_invariant):
1963         Remove.
1964         (vector::size, vector::capacity): Remove calls to _M_invariant.
1965         * include/bits/vector.tcc (vector::_M_fill_assign): Add
1966         optimization hint to reallocating path.
1967         (vector::_M_assign_aux(FwdIter, FwdIter, forward_iterator_tag)):
1968         Likewise.
1969         * testsuite/23_containers/vector/capacity/invariant.cc: Moved
1970         to...
1971         * testsuite/23_containers/vector/modifiers/assign/no_realloc.cc:
1972         ...here. Check assign(FwdIter, FwdIter) too.
1973         * testsuite/23_containers/vector/types/1.cc: Revert addition
1974         of -Wno-stringop-overread option.
1975
1976 2023-06-01  Jonathan Wakely  <jwakely@redhat.com>
1977
1978         * doc/xml/manual/evolution.xml: Document removal of implicit
1979         allocator rebinding extensions in strict mode and for C++20.
1980         * doc/html/*: Regenerate.
1981
1982 2023-06-01  Jason Merrill  <jason@redhat.com>
1983
1984         * libsupc++/eh_personality.cc (PERSONALITY_FUNCTION): Don't check
1985         handlers in the cleanup phase.
1986
1987 2023-06-01  Matthias Kretz  <m.kretz@gsi.de>
1988
1989         PR libstdc++/110050
1990         * include/experimental/bits/simd.h (__vectorized_sizeof): With
1991         __have_neon_a32 only single-precision float works (in addition
1992         to integers).
1993
1994 2023-06-01  François Dumont  <fdumont@gcc.gnu.org>
1995
1996         * include/bits/stl_algo.h
1997         (std::__search, std::search(_FwdIt1, _FwdIt1, _FwdIt2, _FwdIt2, _BinPred)): Move...
1998         * include/bits/stl_algobase.h: ...here.
1999         * include/std/functional: Replace <stl_algo.h> include by <stl_algobase.h>.
2000         * include/parallel/algo.h (std::__parallel::search<_FIt1, _FIt2, _BinaryPred>)
2001         (std::__parallel::__search_switch<_FIt1, _FIt2, _BinaryPred, _ItTag1, _ItTag2>):
2002         Move...
2003         * include/parallel/algobase.h: ...here.
2004         * include/experimental/functional: Remove <bits/stl_algo.h> and <parallel/algorithm>
2005         includes. Include <bits/stl_algobase.h>.
2006
2007 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
2008
2009         PR libstdc++/109818
2010         * acinclude.m4 (GLIBCXX_ENABLE_C99): Add separate check for
2011         float_t and double_t and define HAVE_C99_FLT_EVAL_TYPES.
2012         * config.h.in: Regenerate.
2013         * configure: Regenerate.
2014         * include/c_global/cmath (float_t, double_t): Guard using new
2015         _GLIBCXX_HAVE_C99_FLT_EVAL_TYPES macro.
2016
2017 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
2018
2019         * acinclude.m4 (GLIBCXX_ENABLE_C99): Add checks for C99 math
2020         functions and define _GLIBCXX_USE_C99_MATH_FUNCS. Move checks
2021         for C99 rounding functions to here.
2022         (GLIBCXX_CHECK_C99_TR1): Remove checks for C99 rounding
2023         functions from here.
2024         * config.h.in: Regenerate.
2025         * configure: Regenerate.
2026         * include/bits/random.h: Use _GLIBCXX_USE_C99_MATH_FUNCS instead
2027         of _GLIBCXX_USE_C99_MATH_TR1.
2028         * include/bits/random.tcc: Likewise.
2029         * include/c_compatibility/math.h: Likewise.
2030         * include/c_global/cmath: Likewise.
2031         * include/ext/random: Likewise.
2032         * include/ext/random.tcc: Likewise.
2033         * include/std/complex: Likewise.
2034         * testsuite/20_util/from_chars/4.cc: Likewise.
2035         * testsuite/20_util/from_chars/8.cc: Likewise.
2036         * testsuite/26_numerics/complex/proj.cc: Likewise.
2037         * testsuite/26_numerics/headers/cmath/60401.cc: Likewise.
2038         * testsuite/26_numerics/headers/cmath/types_std_c++0x.cc:
2039         Likewise.
2040         * testsuite/lib/libstdc++.exp (check_v3_target_cstdint):
2041         Likewise.
2042         * testsuite/util/testsuite_random.h: Likewise.
2043
2044 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
2045
2046         * include/bits/stl_vector.h (_Vector_base::_M_invariant()): New
2047         function.
2048         (vector::size(), vector::capacity()): Call _M_invariant().
2049         * testsuite/23_containers/vector/capacity/invariant.cc: New test.
2050         * testsuite/23_containers/vector/types/1.cc: Add suppression for
2051         false positive warning (PR110060).
2052
2053 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
2054
2055         PR libstdc++/109921
2056         * src/c++17/floating_from_chars.cc: Check __FLT128_MANT_DIG__ is
2057         defined before trying to use _Float128.
2058
2059 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
2060
2061         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Fix for 32-bit pointers
2062         to check __INT_PTR_WIDTH__ instead of sizeof(void*).
2063         * configure: Regenerate.
2064
2065 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
2066
2067         * include/bits/unique_lock.h: Include <bits/error_constants.h>
2068         here for std::errc constants.
2069         * include/std/mutex: Do not include <bits/error_constants.h> and
2070         <exception> here.
2071
2072 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
2073
2074         * configure.ac: Replace use of -o operator for test.
2075         * configure: Regenerate.
2076
2077 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
2078
2079         * include/std/scoped_allocator (scoped_allocator_adaptor): Add
2080         noexcept to all constructors except the default constructor.
2081         (scoped_allocator_adaptor::inner_allocator): Add noexcept.
2082         (scoped_allocator_adaptor::outer_allocator): Likewise.
2083         * testsuite/20_util/scoped_allocator/noexcept.cc: New test.
2084
2085 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
2086
2087         PR libstdc++/104772
2088         * include/std/limits (numeric_limits<__float128>): Define.
2089         * testsuite/18_support/numeric_limits/128bit.cc: New test.
2090
2091 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
2092
2093         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Extend logic for avr and
2094         msp430 to all 16-bit targets.
2095         * configure: Regenerate.
2096
2097 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
2098
2099         PR libstdc++/109921
2100         * src/c++17/floating_from_chars.cc (USE_STRTOF128_FOR_FROM_CHARS):
2101         Only define when USE_STRTOD_FOR_FROM_CHARS is also defined.
2102         (USE_STRTOD_FOR_FROM_CHARS): Do not undefine when long double is
2103         binary64.
2104         (from_chars(const char*, const char*, double&, chars_format)):
2105         Check __LDBL_MANT_DIG__ == __DBL_MANT_DIG__ here.
2106         (from_chars(const char*, const char*, _Float128&, chars_format))
2107         Only use from_chars_strtod when USE_STRTOD_FOR_FROM_CHARS is
2108         defined, otherwise parse a long double and convert to _Float128.
2109
2110 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
2111
2112         PR libstdc++/109922
2113         * include/std/iomanip (operator>>(basic_istream&, _Setfill)):
2114         Add deprecated attribute to non-standard overload.
2115         * doc/xml/manual/evolution.xml: Document deprecation.
2116         * doc/html/*: Regenerate.
2117         * testsuite/27_io/manipulators/standard/char/1.cc: Add
2118         dg-warning for expected deprecated warning.
2119         * testsuite/27_io/manipulators/standard/char/2.cc: Likewise.
2120         * testsuite/27_io/manipulators/standard/wchar_t/1.cc: Likewise.
2121         * testsuite/27_io/manipulators/standard/wchar_t/2.cc: Likewise.
2122
2123 2023-05-30  Alexandre Oliva  <oliva@adacore.com>
2124
2125         * testsuite/20_util/from_chars/4.cc: Skip long double test06
2126         on x86_64-vxworks.
2127         * testsuite/20_util/to_chars/long_double.cc: Xfail run on
2128         x86_64-vxworks.
2129
2130 2023-05-30  Matthias Kretz  <m.kretz@gsi.de>
2131
2132         PR libstdc++/109822
2133         * include/experimental/bits/simd.h (to_native): Use int NTTP
2134         as specified in PTS2.
2135         (to_compatible): Likewise. Add missing tag to call mask
2136         generator ctor.
2137         * testsuite/experimental/simd/pr109822_cast_functions.cc: New
2138         test.
2139
2140 2023-05-30  Matthias Kretz  <m.kretz@gsi.de>
2141
2142         * testsuite/experimental/simd/tests/integer_operators.cc:
2143         Compute expected value differently to avoid getting turned into
2144         a vector shift.
2145
2146 2023-05-30  Matthias Kretz  <m.kretz@gsi.de>
2147
2148         * testsuite/experimental/simd/tests/operator_cvt.cc: Make long
2149         double <-> (u)long conversion tests conditional on sizeof(long
2150         double) and sizeof(long).
2151
2152 2023-05-26  Matthias Kretz  <m.kretz@gsi.de>
2153
2154         * include/experimental/bits/simd_ppc.h (_S_bit_shift_left):
2155         Negative __y is UB, so prefer signed compare.
2156
2157 2023-05-25  Jonathan Wakely  <jwakely@redhat.com>
2158
2159         * testsuite/util/testsuite_allocator.h (PointerBase): Add
2160         relational operators.
2161
2162 2023-05-25  Alexandre Oliva  <oliva@adacore.com>
2163
2164         * testsuite/20_util/to_chars/long_double.cc: Expect execution
2165         fail on x86-vxworks.
2166
2167 2023-05-24  Matthias Kretz  <m.kretz@gsi.de>
2168
2169         PR libstdc++/109949
2170         * include/experimental/bits/simd.h (__intrinsic_type): If
2171         __ALTIVEC__ is defined, map gnu::vector_size types to their
2172         corresponding __vector T types without losing unsignedness of
2173         integer types. Also prefer long long over long.
2174         * include/experimental/bits/simd_ppc.h (_S_popcount): Cast mask
2175         object to the expected unsigned vector type.
2176
2177 2023-05-24  Matthias Kretz  <m.kretz@gsi.de>
2178
2179         PR libstdc++/109261
2180         * include/experimental/bits/simd.h (__intrinsic_type):
2181         Specialize __intrinsic_type<double, 8> and
2182         __intrinsic_type<double, 16> in any case, but provide the member
2183         type only with __aarch64__.
2184
2185 2023-05-24  Matthias Kretz  <m.kretz@gsi.de>
2186
2187         PR libstdc++/109261
2188         * include/experimental/bits/simd_neon.h (_S_reduce): Add
2189         constexpr and make NEON implementation conditional on
2190         not __builtin_is_constant_evaluated.
2191
2192 2023-05-23  Matthias Kretz  <m.kretz@gsi.de>
2193
2194         PR libstdc++/109261
2195         * include/experimental/bits/simd.h (_SimdWrapper::_M_set):
2196         Avoid vector builtin subscripting in constant expressions.
2197         (resizing_simd_cast): Avoid memcpy if constant_evaluated.
2198         (const_where_expression, where_expression, where)
2199         (__extract_part, simd_mask, _SimdIntOperators, simd): Add either
2200         _GLIBCXX_SIMD_CONSTEXPR (on public APIs), or constexpr (on
2201         internal APIs).
2202         * include/experimental/bits/simd_builtin.h (__vector_permute)
2203         (__vector_shuffle, __extract_part, _GnuTraits::_SimdCastType1)
2204         (_GnuTraits::_SimdCastType2, _SimdImplBuiltin)
2205         (_MaskImplBuiltin::_S_store): Add constexpr.
2206         (_CommonImplBuiltin::_S_store_bool_array)
2207         (_SimdImplBuiltin::_S_load, _SimdImplBuiltin::_S_store)
2208         (_SimdImplBuiltin::_S_reduce, _MaskImplBuiltin::_S_load): Add
2209         constant_evaluated case.
2210         * include/experimental/bits/simd_fixed_size.h
2211         (_S_masked_load): Reword comment.
2212         (__tuple_element_meta, __make_meta, _SimdTuple::_M_apply_r)
2213         (_SimdTuple::_M_subscript_read, _SimdTuple::_M_subscript_write)
2214         (__make_simd_tuple, __optimize_simd_tuple, __extract_part)
2215         (__autocvt_to_simd, _Fixed::__traits::_SimdBase)
2216         (_Fixed::__traits::_SimdCastType, _SimdImplFixedSize): Add
2217         constexpr.
2218         (_SimdTuple::operator[], _M_set): Add constexpr and add
2219         constant_evaluated case.
2220         (_MaskImplFixedSize::_S_load): Add constant_evaluated case.
2221         * include/experimental/bits/simd_scalar.h: Add constexpr.
2222         * include/experimental/bits/simd_x86.h (_CommonImplX86): Add
2223         constexpr and add constant_evaluated case.
2224         (_SimdImplX86::_S_equal_to, _S_not_equal_to, _S_less)
2225         (_S_less_equal): Value-initialize to satisfy constexpr
2226         evaluation.
2227         (_MaskImplX86::_S_load): Add constant_evaluated case.
2228         (_MaskImplX86::_S_store): Add constexpr and constant_evaluated
2229         case. Value-initialize local variables.
2230         (_MaskImplX86::_S_logical_and, _S_logical_or, _S_bit_not)
2231         (_S_bit_and, _S_bit_or, _S_bit_xor): Add constant_evaluated
2232         case.
2233         * testsuite/experimental/simd/pr109261_constexpr_simd.cc: New
2234         test.
2235
2236 2023-05-22  Matthias Kretz  <m.kretz@gsi.de>
2237
2238         * include/experimental/bits/simd_builtin.h (_S_fpclassify): Move
2239         __infn into #ifdef'ed block.
2240         * testsuite/experimental/simd/tests/fpclassify.cc: Declare
2241         constants only when used.
2242         * testsuite/experimental/simd/tests/frexp.cc: Likewise.
2243         * testsuite/experimental/simd/tests/logarithm.cc: Likewise.
2244         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc:
2245         Likewise.
2246         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
2247         Move totest and expect1 into #ifdef'ed block.
2248
2249 2023-05-19  Gerald Pfeifer  <gerald@pfeifer.com>
2250
2251         * doc/xml/manual/strings.xml: Move lafstern.org reference to https.
2252         * doc/html/manual/strings.html: Regenerate.
2253
2254 2023-05-17  Jakub Jelinek  <jakub@redhat.com>
2255
2256         PR libstdc++/109883
2257         * testsuite/26_numerics/headers/cmath/constexpr_std_c++23.cc: New test.
2258
2259 2023-05-17  Jakub Jelinek  <jakub@redhat.com>
2260
2261         PR libstdc++/109883
2262         * include/c_global/cmath (atan2, fmod, pow): Move
2263         __gnu_cxx::__promote_2 using templates after _Float{16,32,64,128} and
2264         __gnu_cxx::__bfloat16_t overloads.
2265         (copysign, fdim, fmax, fmin, hypot, nextafter, remainder, remquo):
2266         Likewise.
2267         (fma): Move __gnu_cxx::__promote_3 using template after
2268         _Float{16,32,64,128} and __gnu_cxx::__bfloat16_t overloads.
2269
2270 2023-05-17  Jonathan Wakely  <jwakely@redhat.com>
2271
2272         * testsuite/18_support/headers/limits/synopsis.cc: Uncomment
2273         checks for float_round_style and float_denorm_style.
2274
2275 2023-05-17  Jonathan Wakely  <jwakely@redhat.com>
2276
2277         * include/bits/c++config: Add system_header pragma.
2278
2279 2023-05-17  Jonathan Wakely  <jwakely@redhat.com>
2280
2281         * include/std/expected (expected::and_then, expected::or_else)
2282         (expected::transform, expected::transform_error): Fix exception
2283         specifications as per LWG 3877.
2284         (expected<void, E>::and_then, expected<void, E>::transform):
2285         Likewise.
2286         * testsuite/20_util/expected/lwg3877.cc: New test.
2287
2288 2023-05-17  Ken Matsui  <kmatsui@cs.washington.edu>
2289
2290         * include/std/type_traits: Use __bool_constant instead of
2291         integral_constant.
2292
2293 2023-05-17  Jonathan Wakely  <jwakely@redhat.com>
2294
2295         * configure: Regenerate.
2296
2297 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
2298
2299         PR libstdc++/109741
2300         * acinclude.m4 (GLIBCXX_CHECK_ALIGNAS_CACHELINE): Define.
2301         * config.h.in: Regenerate.
2302         * configure: Regenerate.
2303         * configure.ac: Use GLIBCXX_CHECK_ALIGNAS_CACHELINE.
2304         * src/c++11/shared_ptr.cc (__gnu_internal::get_mutex): Do not
2305         align lock table if not supported. use __GCC_DESTRUCTIVE_SIZE
2306         instead of hardcoded 64.
2307
2308 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
2309
2310         * acinclude.m4 (GLIBCXX_USE_C99): Check for isblank in C++11
2311         mode and define _GLIBCXX_USE_C99_CTYPE. Check for <fenv.h>
2312         functions in C++11 mode and define _GLIBCXX_USE_C99_FENV.
2313         * config.h.in: Regenerate.
2314         * configure: Regenerate.
2315         * include/c_compatibility/fenv.h: Check _GLIBCXX_USE_C99_FENV
2316         instead of _GLIBCXX_USE_C99_FENV_TR1.
2317         * include/c_global/cfenv: Likewise.
2318         * include/c_global/cctype: Check _GLIBCXX_USE_C99_CTYPE instead
2319         of _GLIBCXX_USE_C99_CTYPE_TR1.
2320
2321 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
2322
2323         * acinclude.m4 (GLIBCXX_USE_C99): Check for <stdint.h> types in
2324         C++11 mode and define _GLIBCXX_USE_C99_STDINT. Check for
2325         <inttypes.h> features in C++11 mode and define
2326         _GLIBCXX_USE_C99_INTTYPES and _GLIBCXX_USE_C99_INTTYPES_WCHAR_T.
2327         * config.h.in: Regenerate.
2328         * configure: Regenerate.
2329         * doc/doxygen/user.cfg.in (PREDEFINED): Add new macros.
2330         * include/bits/chrono.h: Check _GLIBCXX_USE_C99_STDINT instead
2331         of _GLIBCXX_USE_C99_STDINT_TR1.
2332         * include/c_compatibility/inttypes.h: Check
2333         _GLIBCXX_USE_C99_INTTYPES and _GLIBCXX_USE_C99_INTTYPES_WCHAR_T
2334         instead of _GLIBCXX_USE_C99_INTTYPES_TR1 and
2335         _GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1.
2336         * include/c_compatibility/stdatomic.h: Check
2337         _GLIBCXX_USE_C99_STDINT instead of _GLIBCXX_USE_C99_STDINT_TR1.
2338         * include/c_compatibility/stdint.h: Likewise.
2339         * include/c_global/cinttypes: Check _GLIBCXX_USE_C99_INTTYPES
2340         and _GLIBCXX_USE_C99_INTTYPES_WCHAR_T instead of
2341         _GLIBCXX_USE_C99_INTTYPES_TR1 and
2342         _GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1.
2343         * include/c_global/cstdint: Check _GLIBCXX_USE_C99_STDINT
2344         instead of _GLIBCXX_USE_C99_STDINT_TR1.
2345         * include/std/atomic: Likewise.
2346         * src/c++11/cow-stdexcept.cc: Likewise.
2347         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc:
2348         Likewise.
2349         * testsuite/lib/libstdc++.exp (check_v3_target_cstdint):
2350         Likewise.
2351
2352 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
2353
2354         * acinclude.m4 (GLIBCXX_USE_C99): Check for complex inverse trig
2355         functions in C++11 mode and define _GLIBCXX_USE_C99_COMPLEX_ARC.
2356         * config.h.in: Regenerate.
2357         * configure: Regenerate.
2358         * doc/doxygen/user.cfg.in (PREDEFINED): Add new macro.
2359         * include/std/complex: Check _GLIBCXX_USE_C99_COMPLEX_ARC
2360         instead of _GLIBCXX_USE_C99_COMPLEX_TR1.
2361
2362 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
2363
2364         * testsuite/ext/debug_allocator/check_deallocate_null.cc: Add
2365         assertion to ensure expected exception is throw.
2366
2367 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
2368
2369         * testsuite/libstdc++-prettyprinters/chrono.cc: Only test
2370         printer for chrono::zoned_time for cx11 ABI and tzdb effective
2371         target.
2372
2373 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
2374
2375         * acinclude.m4 (GLIBCXX_CHECK_PTHREAD_MUTEX_CLOCKLOCK): Define
2376         _GLIBCXX_USE_PTHREAD_MUTEX_CLOCKLOCK in terms of _GLIBCXX_TSAN.
2377         * configure: Regenerate.
2378
2379 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
2380
2381         * acinclude.m4 (GLIBCXX_CHECK_C99_TR1): Use a non-null pointer
2382         to check for nan, nanf, and nanl.
2383         * configure: Regenerate.
2384
2385 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
2386
2387         * include/bits/char_traits.h (char_traits<char16_t>): Do not
2388         depend on _GLIBCXX_USE_C99_STDINT_TR1.
2389         (char_traits<char32_t>): Likewise.
2390         * include/experimental/source_location: Likewise.
2391
2392 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
2393
2394         * include/std/atomic (atomic_int_least8_t, atomic_uint_least8_t)
2395         (atomic_int_least16_t, atomic_uint_least16_t)
2396         (atomic_int_least32_t, atomic_uint_least32_t)
2397         (atomic_int_least64_t, atomic_uint_least64_t)
2398         (atomic_int_fast16_t, atomic_uint_fast16_t)
2399         (atomic_int_fast32_t, atomic_uint_fast32_t)
2400         (atomic_int_fast64_t, atomic_uint_fast64_t)
2401         (atomic_intmax_t, atomic_uintmax_t): Define unconditionally.
2402         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc: Adjust.
2403
2404 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
2405
2406         * include/bits/algorithmfwd.h (shuffle): Do not depend on
2407         _GLIBCXX_USE_C99_STDINT_TR1.
2408         * include/bits/ranges_algo.h (shuffle): Likewise.
2409         * include/bits/stl_algo.h (shuffle): Likewise.
2410         * include/ext/random: Likewise.
2411         * include/ext/throw_allocator.h (random_condition): Likewise.
2412         * include/std/random: Likewise.
2413         * src/c++11/cow-string-inst.cc: Likewise.
2414         * src/c++11/random.cc: Likewise.
2415
2416 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
2417
2418         * testsuite/experimental/feat-cxx14.cc: Remove dependency on
2419         _GLIBCXX_USE_C99_STDINT_TR1.
2420
2421 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
2422
2423         * testsuite/22_locale/locale/cons/unicode.cc: Remove dependency
2424         on _GLIBCXX_USE_C99_STDINT_TR1.
2425
2426 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
2427
2428         * testsuite/21_strings/basic_string_view/typedefs.cc: Remove
2429         dependency on _GLIBCXX_USE_C99_STDINT_TR1.
2430         * testsuite/experimental/string_view/typedefs.cc: Likewise.
2431
2432 2023-05-11  Jonathan Wakely  <jwakely@redhat.com>
2433
2434         * src/c++17/floating_from_chars.cc [USE_STRTOD_FOR_FROM_CHARS]
2435         (auto_locale, auto_ferounding): New class types.
2436         (from_chars_impl): Use auto_locale and auto_ferounding.
2437
2438 2023-05-11  Jonathan Wakely  <jwakely@redhat.com>
2439
2440         PR libstdc++/109772
2441         * include/std/chrono (hh_mm_ss::__fits): Remove variable
2442         template.
2443         (hh_mm_ss::__subseconds): Remove __fits from constraints.
2444         * testsuite/std/time/hh_mm_ss/109772.cc: New test.
2445         * testsuite/std/time/hh_mm_ss/1.cc: Adjust expected size for
2446         hh_mm_ss<duration<int, std::pico>>.
2447
2448 2023-05-11  Jonathan Wakely  <jwakely@redhat.com>
2449
2450         * config/abi/pre/gnu.ver: Export basic_string::_S_allocate.
2451         * include/bits/basic_ios.h: Add static assertion checking
2452         traits_type::value_type.
2453         * include/bits/basic_string.h: Likewise. Do not rebind
2454         allocator, and add static assertion checking its value_type.
2455         (basic_string::_Alloc_traits_impl): Remove class template.
2456         (basic_string::_S_allocate): New static member function.
2457         (basic_string::assign): Use _S_allocate.
2458         * include/bits/basic_string.tcc (basic_string::_M_create)
2459         (basic_string::reserve, basic_string::_M_replace): Likewise.
2460         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/debug.cc:
2461         Disable for C++20 and later.
2462         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/int.cc:
2463         Likweise.
2464
2465 2023-05-11  Jonathan Wakely  <jwakely@redhat.com>
2466
2467         PR libstdc++/109758
2468         * include/bits/std_abs.h (abs(__float128)): Handle negative NaN
2469         and negative zero correctly.
2470         * testsuite/26_numerics/headers/cmath/109758.cc: New test.
2471
2472 2023-05-10  François Dumont  <fdumont@gcc.gnu.org>
2473
2474         * include/bits/hashtable_policy.h
2475         (_NodeBuilder<>::_S_build): Use __node_ptr.
2476         (_ReuseOrAllocNode<>): Use __node_ptr in place of __node_type*.
2477         (_AllocNode<>): Likewise.
2478         (_Equality<>::_M_equal): Remove const_iterator usages. Only preserved
2479         to call std::is_permutation in the non-unique key implementation.
2480         * include/bits/hashtable.h (_Hashtable<>::_M_update_begin()): Capture
2481         _M_begin() once.
2482         (_Hashtable<>::_M_bucket_begin(size_type)): Implement implicitly inline.
2483         (_Hashtable<>::_M_insert_bucket_begin): Likewise.
2484         (_Hashtable<>::_M_remove_bucket_begin): Likewise.
2485         (_Hashtable<>::_M_compute_hash_code): Use __node_ptr rather than
2486         const_iterator.
2487         (_Hashtable<>::find): Likewise.
2488         (_Hashtable<>::_M_emplace): Likewise.
2489         (_Hashtable<>::_M_insert_unique): Likewise.
2490
2491 2023-05-09  Jonathan Wakely  <jwakely@redhat.com>
2492
2493         * python/libstdcxx/v6/printers.py (StdChronoDurationPrinter):
2494         Print floating-point durations correctly.
2495         (StdChronoTimePointPrinter): Support printing only the value,
2496         not the type name. Uncomment handling for known clocks.
2497         (StdChronoZonedTimePrinter): Remove type names from output.
2498         (StdChronoCalendarPrinter): Fix hh_mm_ss member access.
2499         (StdChronoTimeZonePrinter): Add equals sign to output.
2500         * testsuite/libstdc++-prettyprinters/chrono.cc: New test.
2501
2502 2023-05-05  Alexandre Oliva  <oliva@adacore.com>
2503
2504         * testsuite/20_util/from_chars/4.cc: Skip long double test06
2505         on aarch64-vxworks.
2506         * testsuite/20_util/to_chars/long_double.cc: Xfail run on
2507         aarch64-vxworks.
2508
2509 2023-05-04  Jonathan Wakely  <jwakely@redhat.com>
2510
2511         * doc/xml/manual/abi.xml (abi.versioning.history): Document
2512         libstdc++.so.6.0.32 and GLIBCXX_3.4.32 version.
2513         * doc/html/manual/abi.html: Regenerate.
2514
2515 2023-05-04  Florian Weimer  <fweimer@redhat.com>
2516
2517         * doc/xml/manual/abi.xml (abi.versioning.history): Add
2518         GCC_7.0.0, GCC_9.0.0, GCC_11.0, GCC_12.0.0, GCC_13.0.0 for
2519         libgcc_s.
2520
2521 2023-05-03  Jakub Jelinek  <jakub@redhat.com>
2522
2523         * src/c++17/floating_from_chars.cc
2524         (_ZSt10from_charsPKcS0_RDF128_St12chars_format): New alias to
2525         _ZSt10from_charsPKcS0_Ru9__ieee128St12chars_format.
2526         * src/c++17/floating_to_chars.cc (_ZSt8to_charsPcS_DF128_): New alias to
2527         _ZSt8to_charsPcS_u9__ieee128.
2528         (_ZSt8to_charsPcS_DF128_St12chars_format): New alias to
2529         _ZSt8to_charsPcS_u9__ieee128St12chars_format.
2530         (_ZSt8to_charsPcS_DF128_St12chars_formati): New alias to
2531         _ZSt8to_charsPcS_u9__ieee128St12chars_formati.
2532         * config/abi/post/powerpc64le-linux-gnu/baseline_symbols.txt: Updated.
2533
2534 2023-05-03  Jakub Jelinek  <jakub@redhat.com>
2535
2536         * configure.host (abi_baseline_pair): Use powerpc64le-linux-gnu
2537         rather than powerpc64-linux-gnu for powerpc64le*-linux*.
2538         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Remove
2539         _ZTI*DF128_, _ZTI*DF64x symbols and symbols in
2540         GLIBCXX_IEEE128_3.4.{29,30,31} and CXXABI_IEEE128_1.3.13 symbol
2541         versions.
2542         * config/abi/post/powerpc64le-linux-gnu/baseline_symbols.txt: New
2543         file.
2544
2545 2023-05-03  Kefu Chai  <kefu.chai@scylladb.com>
2546             Jonathan Wakely  <jwakely@redhat.com>
2547
2548         PR libstdc++/109703
2549         * include/bits/basic_string.h (basic_string(Iter, Iter, Alloc)):
2550         Initialize _M_string_length.
2551
2552 2023-05-02  Jakub Jelinek  <jakub@redhat.com>
2553
2554         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
2555         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
2556         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
2557         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
2558         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
2559         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
2560         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
2561         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
2562
2563 2023-05-02  Jakub Jelinek  <jakub@redhat.com>
2564
2565         PR libstdc++/109694
2566         * src/c++98/ios_init.cc: Add #pragma GCC diagnostic ignored for
2567         -Wattribute-alias.
2568
2569 2023-04-28  Jonathan Wakely  <jwakely@redhat.com>
2570
2571         * include/bits/random.h (gamma_distribution): Add to the right
2572         doxygen group.
2573         (discrete_distribution, piecewise_constant_distribution)
2574         (piecewise_linear_distribution): Create a new doxygen group and
2575         fix the incomplete doxygen comments.
2576         * include/bits/uniform_int_dist.h (uniform_int_distribution):
2577         Add to doxygen group.
2578
2579 2023-04-28  Jonathan Wakely  <jwakely@redhat.com>
2580
2581         * include/bits/uses_allocator.h: Add missing @file comment.
2582         * include/bits/regex.tcc: Remove stray doxygen comments.
2583         * include/experimental/memory_resource: Likewise.
2584         * include/std/bit: Tweak doxygen @cond comments.
2585         * include/std/expected: Likewise.
2586         * include/std/numbers: Likewise.
2587
2588 2023-04-28  Jonathan Wakely  <jwakely@redhat.com>
2589
2590         * doc/doxygen/user.cfg.in (STRIP_FROM_PATH): Remove prefixes
2591         from header paths.
2592
2593 2023-04-28  Jonathan Wakely  <jwakely@redhat.com>
2594
2595         * include/bits/move.h: Simplify opening/closing namespace std.
2596
2597 2023-04-28  Jakub Jelinek  <jakub@redhat.com>
2598
2599         PR libstdc++/108969
2600         * config/abi/pre/gnu.ver (GLIBCXX_3.4.32): Export
2601         _ZSt21ios_base_library_initv.
2602         * testsuite/util/testsuite_abi.cc (check_version): Add GLIBCXX_3.4.32
2603         symver and make it the latestp.
2604         * src/c++98/ios_init.cc (ios_base_library_init): New alias.
2605         * acinclude.m4 (libtool_VERSION): Change to 6:32:0.
2606         * include/std/iostream: If init_priority attribute is supported
2607         and _GLIBCXX_SYMVER_GNU, force undefined _ZSt21ios_base_library_initv
2608         symbol into the object.
2609         * configure: Regenerated.
2610
2611 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
2612
2613         * include/bits/mofunc_impl.h: Fix typo in doxygen comment.
2614         * include/std/format: Likewise.
2615
2616 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
2617
2618         * doc/doxygen/user.cfg.in (FORMULA_TRANSPARENT, DOT_FONTNAME)
2619         (DOT_FONTSIZE, DOT_TRANSPARENT): Remove obsolete options.
2620
2621 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
2622
2623         * doc/doxygen/user.cfg.in (SOURCE_BROWSER): Only set to YES for
2624         HTML docs.
2625         * include/bits/gslice_array.h (_DEFINE_VALARRAY_OPERATOR): Omit
2626         from doxygen docs.
2627         * include/bits/indirect_array.h (_DEFINE_VALARRAY_OPERATOR):
2628         Likewise.
2629         * include/bits/mask_array.h (_DEFINE_VALARRAY_OPERATOR):
2630         Likewise.
2631         * include/bits/slice_array.h (_DEFINE_VALARRAY_OPERATOR):
2632         Likewise.
2633         * include/std/valarray (_DEFINE_VALARRAY_UNARY_OPERATOR)
2634         (_DEFINE_VALARRAY_AUGMENTED_ASSIGNMENT)
2635         (_DEFINE_VALARRAY_EXPR_AUGMENTED_ASSIGNMENT)
2636         (_DEFINE_BINARY_OPERATOR): Likewise.
2637
2638 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
2639
2640         * include/bits/memory_resource.h: Improve doxygen comments.
2641         * include/std/memory_resource: Likewise.
2642
2643 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
2644
2645         PR libstdc++/40380
2646         * include/bits/basic_string.h: Improve doxygen comments.
2647         * include/bits/cow_string.h: Likewise.
2648         * include/bits/forward_list.h: Likewise.
2649         * include/bits/fs_dir.h: Likewise.
2650         * include/bits/fs_path.h: Likewise.
2651         * include/bits/quoted_string.h: Likewise.
2652         * include/bits/stl_bvector.h: Likewise.
2653         * include/bits/stl_map.h: Likewise.
2654         * include/bits/stl_multimap.h: Likewise.
2655         * include/bits/stl_multiset.h: Likewise.
2656         * include/bits/stl_set.h: Likewise.
2657         * include/bits/stl_vector.h: Likewise.
2658         * include/bits/unordered_map.h: Likewise.
2659         * include/bits/unordered_set.h: Likewise.
2660         * include/std/filesystem: Likewise.
2661         * include/std/iomanip: Likewise.
2662
2663 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
2664
2665         PR libstdc++/105081
2666         * src/c++11/random.cc (__throw_syserr): New function.
2667         (random_device::_M_init, random_device::_M_init_pretr1): Use new
2668         function for bad tokens.
2669         (random_device::_M_getval): Use new function for read errors.
2670         * testsuite/util/testsuite_random.h (random_device_available):
2671         Change catch handler to use std::system_error.
2672
2673 2023-04-24  Patrick Palka  <ppalka@redhat.com>
2674
2675         * include/bits/max_size_type.h (__max_diff_type::operator>>=):
2676         Fix propagation of sign bit.
2677         * testsuite/std/ranges/iota/max_size_type.cc: Avoid using the
2678         non-standard 'signed typedef-name'.  Add some compile-time tests
2679         for right-shifting a negative __max_diff_type value by more than
2680         one.
2681
2682 2023-04-19  Patrick Palka  <ppalka@redhat.com>
2683             Jonathan Wakely  <jwakely@redhat.com>
2684
2685         PR c++/100157
2686         * include/bits/utility.h (_Nth_type): Conditionally define in
2687         terms of __type_pack_element if available.
2688         * testsuite/20_util/tuple/element_access/get_neg.cc: Prune
2689         additional errors from the new built-in.
2690
2691 2023-04-19  Jonathan Wakely  <jwakely@redhat.com>
2692
2693         Revert:
2694         2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
2695
2696         PR libstdc++/108969
2697         * src/Makefile.am: Move globals_io.cc to here.
2698         * src/Makefile.in: Regenerate.
2699         * src/c++98/Makefile.am: Remove globals_io.cc from here.
2700         * src/c++98/Makefile.in: Regenerate.
2701         * src/c++98/globals_io.cc [_GLIBCXX_SYMVER_GNU] (cin): Adjust
2702         symbol name and then export with GLIBCXX_3.4.31 symver.
2703         (cout, cerr, clog, wcin, wcout, wcerr, wclog): Likewise.
2704         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt:
2705         Regenerate.
2706         * config/abi/post/i486-linux-gnu/baseline_symbols.txt:
2707         Regenerate.
2708         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt:
2709         Regenerate.
2710         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt:
2711         Regenerate.
2712         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt:
2713         Regenerate.
2714         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt:
2715         Regenerate.
2716         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt:
2717         Regenerate.
2718         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt:
2719         Regenerate.
2720         * config/abi/pre/gnu.ver: Add iostream objects to new symver.
2721
2722 2023-04-19  Jonathan Wakely  <jwakely@redhat.com>
2723
2724         Revert:
2725         2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
2726
2727         PR libstdc++/108969
2728         * config/abi/pre/gnu.ver: Fix preprocessor condition.
2729
2730 2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
2731
2732         * doc/xml/manual/extensions.xml: Fix example to declare and
2733         qualify std::free, and use NULL instead of 0.
2734         * doc/html/manual/ext_demangling.html: Regenerate.
2735         * libsupc++/cxxabi.h: Adjust doxygen comments.
2736
2737 2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
2738
2739         PR libstdc++/108969
2740         * config/abi/pre/gnu.ver: Fix preprocessor condition.
2741
2742 2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
2743
2744         PR libstdc++/108969
2745         * src/Makefile.am: Move globals_io.cc to here.
2746         * src/Makefile.in: Regenerate.
2747         * src/c++98/Makefile.am: Remove globals_io.cc from here.
2748         * src/c++98/Makefile.in: Regenerate.
2749         * src/c++98/globals_io.cc [_GLIBCXX_SYMVER_GNU] (cin): Adjust
2750         symbol name and then export with GLIBCXX_3.4.31 symver.
2751         (cout, cerr, clog, wcin, wcout, wcerr, wclog): Likewise.
2752         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt:
2753         Regenerate.
2754         * config/abi/post/i486-linux-gnu/baseline_symbols.txt:
2755         Regenerate.
2756         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt:
2757         Regenerate.
2758         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt:
2759         Regenerate.
2760         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt:
2761         Regenerate.
2762         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt:
2763         Regenerate.
2764         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt:
2765         Regenerate.
2766         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt:
2767         Regenerate.
2768         * config/abi/pre/gnu.ver: Add iostream objects to new symver.
2769
2770 2023-04-18  Patrick Palka  <ppalka@redhat.com>
2771
2772         PR libstdc++/108827
2773         * include/bits/ranges_cmp.h (__cpp_lib_ranges): Bump value
2774         for C++23.
2775         * include/std/ranges (range_adaptor_closure): Define for C++23.
2776         * include/std/version (__cpp_lib_ranges): Bump value for
2777         C++23.
2778         * testsuite/std/ranges/version_c++23.cc: Bump expected value
2779         of __cpp_lib_ranges.
2780         * testsuite/std/ranges/range_adaptor_closure.cc: New test.
2781
2782 2023-04-18  Patrick Palka  <ppalka@redhat.com>
2783
2784         * include/bits/ranges_algo.h (__cpp_lib_ranges_contains):
2785         Define for C++23.
2786         (__cpp_lib_ranges_iota): Likewise.
2787         (__cpp_lib_ranges_find_last): Likewise.
2788         (__cpp_lib_fold): Rename to ...
2789         (__cpp_lib_ranges_fold): ... this.
2790         * include/std/version: As above.
2791         * testsuite/25_algorithms/fold_left/1.cc: Adjust after
2792         renaming __cpp_lib_fold.
2793         * testsuite/std/ranges/version_c++23.cc: Verify values
2794         of the above feature-test macros.
2795
2796 2023-04-18  Patrick Palka  <ppalka@redhat.com>
2797
2798         PR libstdc++/109525
2799         * include/std/ranges (views::_AsConst::operator()): Add
2800         missing const to constant_range test.
2801         * testsuite/std/ranges/adaptors/as_const/1.cc (test02):
2802         Improve formatting.  Adjust expected type of v2.
2803         (test03): New test.
2804
2805 2023-04-14  Patrick Palka  <ppalka@redhat.com>
2806
2807         * include/bits/ranges_base.h (const_iterator_t): Define for C++23.
2808         (const_sentinel_t): Likewise.
2809         (range_const_reference_t): Likewise.
2810         (constant_range): Likewise.
2811         (__cust_access::__possibly_const_range): Likewise, replacing ...
2812         (__cust_access::__as_const): ... this.
2813         (__cust_access::_CBegin::operator()): Redefine for C++23 as per P2278R4.
2814         (__cust_access::_CEnd::operator()): Likewise.
2815         (__cust_access::_CRBegin::operator()): Likewise.
2816         (__cust_access::_CREnd::operator()): Likewise.
2817         (__cust_access::_CData::operator()): Likewise.
2818         * include/bits/ranges_util.h (ranges::__detail::__different_from):
2819         Make it an alias of std::__detail::__different_from.
2820         (view_interface::cbegin): Define for C++23.
2821         (view_interface::cend): Likewise.
2822         * include/bits/stl_iterator.h (__detail::__different_from): Define.
2823         (iter_const_reference_t): Define for C++23.
2824         (__detail::__constant_iterator): Likewise.
2825         (__detail::__is_const_iterator): Likewise.
2826         (__detail::__not_a_const_iterator): Likewise.
2827         (__detail::__iter_const_rvalue_reference_t): Likewise.
2828         (__detail::__basic_const_iter_cat):: Likewise.
2829         (const_iterator): Likewise.
2830         (__detail::__const_sentinel): Likewise.
2831         (const_sentinel): Likewise.
2832         (basic_const_iterator): Likewise.
2833         (common_type<basic_const_iterator<_Tp>, _Up>): Likewise.
2834         (common_type<_Up, basic_const_iterator<_Tp>>): Likewise.
2835         (common_type<basic_const_iterator<_Tp>, basic_const_iterator<Up>>):
2836         Likewise.
2837         (make_const_iterator): Define for C++23.
2838         (make_const_sentinel): Likewise.
2839         * include/std/ranges (__cpp_lib_ranges_as_const): Likewise.
2840         (as_const_view): Likewise.
2841         (enable_borrowed_range<as_const_view>): Likewise.
2842         (views::__detail::__is_ref_view): Likewise.
2843         (views::__detail::__can_is_const_view): Likewise.
2844         (views::_AsConst, views::as_const): Likewise.
2845         * include/std/span (span::const_iterator): Likewise.
2846         (span::const_reverse_iterator): Likewise.
2847         (span::cbegin): Likewise.
2848         (span::cend): Likewise.
2849         (span::crbegin): Likewise.
2850         (span::crend): Likewise.
2851         * include/std/version (__cpp_lib_ranges_as_const): Likewise.
2852         * testsuite/std/ranges/adaptors/join.cc (test06): Adjust to
2853         behave independently of C++20 vs C++23.
2854         * testsuite/std/ranges/version_c++23.cc: Verify value of
2855         __cpp_lib_ranges_as_const macro.
2856         * testsuite/24_iterators/const_iterator/1.cc: New test.
2857         * testsuite/std/ranges/adaptors/as_const/1.cc: New test.
2858
2859 2023-04-14  Patrick Palka  <ppalka@redhat.com>
2860
2861         * include/bits/ranges_base.h (__cust_access::__as_const)
2862         (__cust_access::_CBegin, __cust::cbegin)
2863         (__cust_access::_CEnd, __cust::cend)
2864         (__cust_access::_CRBegin, __cust::crbegin)
2865         (__cust_access::_CREnd, __cust::crend)
2866         (__cust_access::_CData, __cust::cdata): Move down definitions to
2867         shortly after the definition of input_range.
2868
2869 2023-04-14  Patrick Palka  <ppalka@redhat.com>
2870
2871         * include/bits/ranges_algo.h: Include <optional> for C++23.
2872         (__cpp_lib_fold): Define for C++23.
2873         (in_value_result): Likewise.
2874         (__detail::__flipped): Likewise.
2875         (__detail::__indirectly_binary_left_foldable_impl): Likewise.
2876         (__detail::__indirectly_binary_left_foldable): Likewise.
2877         (___detail:__indirectly_binary_right_foldable): Likewise.
2878         (fold_left_with_iter_result): Likewise.
2879         (__fold_left_with_iter_fn, fold_left_with_iter): Likewise.
2880         (__fold_left_fn, fold_left): Likewise.
2881         (__fold_left_first_with_iter_fn, fold_left_first_with_iter):
2882         Likewise.
2883         (__fold_left_first_fn, fold_left_first): Likewise.
2884         (__fold_right_fn, fold_right): Likewise.
2885         (__fold_right_last_fn, fold_right_last): Likewise.
2886         * include/std/version (__cpp_lib_fold): Likewise.
2887         * testsuite/25_algorithms/fold_left/1.cc: New test.
2888         * testsuite/25_algorithms/fold_right/1.cc: New test.
2889
2890 2023-04-14  Jonathan Wakely  <jwakely@redhat.com>
2891
2892         * include/std/format (formatter): Add comment to deleted default
2893         constructor of primary template.
2894         (_Checking_scanner): Add static_assert.
2895
2896 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
2897
2898         * doc/xml/manual/using.xml: Document libstdc++exp.a library.
2899         * doc/html/*: Regenerate.
2900
2901 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
2902
2903         * testsuite/17_intro/names.cc [_AIX]: Do not define policy.
2904         * testsuite/19_diagnostics/error_code/cons/lwg3629.cc: Rename
2905         namespace to avoid clashing with libc struct.
2906         * testsuite/19_diagnostics/error_condition/cons/lwg3629.cc:
2907         Likewise.
2908         * testsuite/23_containers/unordered_map/96088.cc: Skip on AIX.
2909         * testsuite/23_containers/unordered_multimap/96088.cc: Likewise.
2910         * testsuite/23_containers/unordered_multiset/96088.cc: Likewise.
2911         * testsuite/23_containers/unordered_set/96088.cc: Likewise.
2912         * testsuite/experimental/synchronized_value.cc: Require gthreads
2913         and add missing option for pthreads targets.
2914
2915 2023-04-12  Patrick Palka  <ppalka@redhat.com>
2916
2917         * include/std/ranges (__cpp_lib_ranges_enumerate): Define
2918         for C++23.
2919         (__detail::__range_with_movable_reference): Likewise.
2920         (enumerate_view): Likewise.
2921         (enumerate_view::_Iterator): Likewise.
2922         (enumerate_view::_Sentinel): Likewise.
2923         (views::__detail::__can_enumerate_view): Likewise.
2924         (views::_Enumerate, views::enumerate): Likewise.
2925         * include/std/version (__cpp_lib_ranges_enumerate): Likewise.
2926         * testsuite/std/ranges/version_c++23.cc: Verify value of
2927         __cpp_lib_ranges_enumerate.
2928         * testsuite/std/ranges/adaptors/enumerate/1.cc: New test.
2929
2930 2023-04-12  Patrick Palka  <ppalka@redhat.com>
2931
2932         * include/std/ranges (lazy_split_view::_OuterIter::_OuterIter):
2933         Propagate _M_trailing_empty in the const-converting constructor
2934         as per LWG 3904.
2935         * testsuite/std/ranges/adaptors/adjacent/1.cc (test04): Correct
2936         assertion.
2937         * testsuite/std/ranges/adaptors/lazy_split.cc (test12): New test.
2938
2939 2023-04-12  Patrick Palka  <ppalka@redhat.com>
2940
2941         * src/c++17/floating_from_chars.cc: Include <algorithm>,
2942         <iterator>, <limits> and <cstdint>.
2943
2944 2023-04-12  Patrick Palka  <ppalka@redhat.com>
2945
2946         PR libstdc++/108291
2947         * include/std/ranges (chunk_by_view::_M_find_next): Generalize
2948         parameter types of the lambda wrapper passed to adjacent_find.
2949         (chunk_by_view::_M_find_prev): Likewise.
2950         * testsuite/std/ranges/adaptors/chunk_by/1.cc (test04, test05):
2951         New tests.
2952
2953 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
2954
2955         PR libstdc++/109482
2956         * include/experimental/internet (basic_endpoint::basic_endpoint()):
2957         Ensure that the required union members are active. Only define
2958         as constexpr for C++20 and later.
2959         (basic_endpoint::basic_endpoint(const protocol_type&, port_type)):
2960         Likewise.
2961         * testsuite/experimental/net/internet/endpoint/cons.cc: Only
2962         check constexpr default constructor for C++20 and later.
2963         * testsuite/experimental/net/internet/endpoint/extensible.cc:
2964         Likewise.
2965
2966 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
2967
2968         * src/c++20/tzdata.zi: Import new file from 2023c release.
2969
2970 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
2971
2972         * include/precompiled/stdc++.h (C++17): Don't double-include
2973         <charconv>, once with wrong conditions.
2974         * testsuite/18_support/96817.cc: Require hosted.
2975         * testsuite/18_support/bad_exception/59392.cc: Ditto.
2976         * testsuite/20_util/scoped_allocator/108952.cc: Ditto.
2977         * testsuite/20_util/uses_allocator/lwg3527.cc: Ditto.
2978         * testsuite/29_atomics/atomic/operators/pointer_partial_void.cc:
2979         Ditto.
2980
2981 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
2982
2983         * include/bits/c++config: When __STDC_HOSTED__ is zero,
2984         disable _GLIBCXX_DEBUG and, if it was set, enable
2985         _GLIBCXX_ASSERTIONS.
2986         * testsuite/lib/libstdc++.exp (check_v3_target_debug_mode):
2987         Include <bits/c++config.h> when determining whether debug is
2988         set, in order to inherit the logic from above
2989
2990 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
2991
2992         * testsuite/17_intro/versionconflict.cc: New test.
2993         * include/std/version: Allow disabling the system_header pragma
2994         via _GLIBCXX_TESTING_SYSHDR.
2995
2996 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
2997
2998         * include/bits/unique_ptr.h (__cpp_lib_constexpr_memory):
2999         Synchronize the definition block with...
3000         * include/bits/ptr_traits.h (__cpp_lib_constexpr_memory):
3001         ... this one here.  Also define the 202202L value, rather than
3002         leaving it up to purely unique_ptr.h, so that the value is
3003         synchronized across all headers.
3004         (__gnu_debug::_Safe_iterator_base): Move into new conditional
3005         block.
3006         * include/std/memory (__cpp_lib_atomic_value_initialization):
3007         Define on freestanding under the same conditions as in
3008         atomic_base.h.
3009         * include/std/version (__cpp_lib_robust_nonmodifying_seq_ops):
3010         Also define on freestanding.
3011         (__cpp_lib_to_chars): Ditto.
3012         (__cpp_lib_gcd): Ditto.
3013         (__cpp_lib_gcd_lcm): Ditto.
3014         (__cpp_lib_raw_memory_algorithms): Ditto.
3015         (__cpp_lib_array_constexpr): Ditto.
3016         (__cpp_lib_nonmember_container_access): Ditto.
3017         (__cpp_lib_clamp): Ditto.
3018         (__cpp_lib_constexpr_char_traits): Ditto.
3019         (__cpp_lib_constexpr_string): Ditto.
3020         (__cpp_lib_sample): Ditto.
3021         (__cpp_lib_lcm): Ditto.
3022         (__cpp_lib_constexpr_iterator): Ditto.
3023         (__cpp_lib_constexpr_char_traits): Ditto.
3024         (__cpp_lib_interpolate): Ditto.
3025         (__cpp_lib_constexpr_utility): Ditto.
3026         (__cpp_lib_shift): Ditto.
3027         (__cpp_lib_ranges): Ditto.
3028         (__cpp_lib_move_iterator_concept): Ditto.
3029         (__cpp_lib_constexpr_numeric): Ditto.
3030         (__cpp_lib_constexpr_functional): Ditto.
3031         (__cpp_lib_constexpr_algorithms): Ditto.
3032         (__cpp_lib_constexpr_tuple): Ditto.
3033         (__cpp_lib_constexpr_memory): Ditto.
3034
3035 2023-04-05  John David Anglin  <danglin@gcc.gnu.org>
3036
3037         * testsuite/22_locale/locale/cons/12658_thread-2.cc: Double
3038         timeout factor on hppa*-*-*.
3039
3040 2023-04-05  Jonathan Wakely  <jwakely@redhat.com>
3041
3042         * include/bits/regex.h (sub_match::swap): New function.
3043         * testsuite/28_regex/sub_match/lwg3204.cc: New test.
3044
3045 2023-04-04  Jonathan Wakely  <jwakely@redhat.com>
3046
3047         * doc/xml/manual/extensions.xml: Remove std::bad_exception from
3048         example program.
3049         * doc/html/manual/ext_demangling.html: Regenerate.
3050
3051 2023-03-31  Jonathan Wakely  <jwakely@redhat.com>
3052
3053         PR tree-optimization/107087
3054         * include/bits/cow_string.h (basic_string::size()): Add
3055         optimizer hint that _S_empty_rep()._M_length is always zero.
3056         (basic_string::length()): Call size().
3057
3058 2023-03-31  Jonathan Wakely  <jwakely@redhat.com>
3059
3060         PR libstdc++/109339
3061         * include/std/stop_token (_Stop_state_ptr(const stop_source&)):
3062         Add attribute access with access-mode 'none'.
3063         * testsuite/30_threads/stop_token/stop_source/109339.cc: New test.
3064
3065 2023-03-31  Jonathan Wakely  <jwakely@redhat.com>
3066
3067         * include/experimental/internet (ip::basic_endpoint::_M_if_v6):
3068         Revert change from member function to data member. Fix for
3069         constant evaluation by detecting which union member is active.
3070         (ip::basic_endpoint::resize): Revert changes to update _M_is_v6
3071         flag.
3072
3073 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
3074
3075         PR libstdc++/109242
3076         * testsuite/20_util/optional/monadic/pr109340.cc: Moved to...
3077         * testsuite/20_util/optional/monadic/pr109242.cc: ...here.
3078
3079 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
3080
3081         * include/experimental/internet (ip::make_address): Implement
3082         missing overload.
3083         (ip::address_v4::broadcast()): Avoid undefined shift.
3084         (ip::basic_endpoint): Fix member functions for constexpr.
3085         (ip::basic_endpoint::_M_is_v6): Replace member function with
3086         data member, adjust member functions using it.
3087         (ip::basic_endpoint::resize): Update _M_is_v6 based on sockaddr
3088         content.
3089         * testsuite/experimental/net/internet/address/v4/cons.cc: Fix
3090         constexpr checks to work in C++14.
3091         * testsuite/experimental/net/internet/address/v4/creation.cc:
3092         Likewise.
3093         * testsuite/experimental/net/internet/endpoint/cons.cc:
3094         Likewise.
3095         * testsuite/experimental/net/internet/network/v4/cons.cc:
3096         Likewise.
3097         * testsuite/experimental/net/internet/network/v4/members.cc:
3098         Likewise.
3099         * testsuite/experimental/net/internet/endpoint/extensible.cc: New test.
3100
3101 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
3102
3103         * include/std/expected (expected::value() &): Use const lvalue
3104         for unex member passed to bad_expected_access constructor, as
3105         per LWG 3843.
3106
3107 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
3108
3109         PR libstdc++/109340
3110         * include/std/expected (expected::transform): Use
3111         std::remove_cv_t instead of std::remove_cvref_t.
3112         (expected::transform_error): Likewise.
3113         (expected<cv void, E>::transform): Likewise.
3114         (expected<cv void, E>::transform_error): Likewise.
3115         * include/std/optional (transform): Use std::remove_cv_t.
3116         * testsuite/20_util/optional/monadic/pr109340.cc: New test.
3117
3118 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
3119
3120         * include/std/optional (optional): Adjust static assertion to
3121         reject arrays and functions as well as references.
3122         * testsuite/20_util/optional/requirements_neg.cc: New test.
3123
3124 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
3125
3126         PR libstdc++/103387
3127         * include/bits/istream.tcc (istream::_M_extract(ValueT&)): Use
3128         std::use_facet instead of cached _M_num_get facet.
3129         (istream::operator>>(short&)): Likewise.
3130         (istream::operator>>(int&)): Likewise.
3131         * include/bits/ostream.tcc (ostream::_M_insert(ValueT)): Use
3132         std::use_facet instead of cached _M_num_put facet.
3133
3134 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
3135
3136         * include/bits/char_traits.h (char_traits::copy): Return without
3137         using memcpy if n==0.
3138         (char_traits::assign): Likewise for memset.
3139
3140 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
3141
3142         PR libstdc++/109299
3143         * include/bits/basic_string.h (basic_string::_M_is_local()): Add
3144         hint for compiler that local strings fit in the local buffer.
3145
3146 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
3147
3148         PR libstdc++/109288
3149         * include/std/chrono (__detail::__get_leap_second_info): Update
3150         expiry date of hardcoded leapseconds list.
3151         * src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds()):
3152         Likewise.
3153         * src/c++20/tzdata.zi: Import new file from 2023a release.
3154         * testsuite/std/time/time_zone/get_info_local.cc: Only check
3155         transitions for Egypt up to 2014.
3156
3157 2023-03-28  Matthias Kretz  <m.kretz@gsi.de>
3158
3159         * include/experimental/bits/simd.h (is_simd_flag_type): New.
3160         (_IsSimdFlagType): New.
3161         (copy_from, copy_to, load ctors): Constrain _Flags using
3162         _IsSimdFlagType.
3163
3164 2023-03-28  Matthias Kretz  <m.kretz@gsi.de>
3165
3166         * include/experimental/bits/simd_x86.h (_SimdImplX86): Use
3167         _Base::_S_divides if the optimized _S_divides function is hidden
3168         via the preprocessor.
3169
3170 2023-03-27  Jakub Jelinek  <jakub@redhat.com>
3171
3172         * testsuite/experimental/net/timer/waitable/dest.cc: Avoid -Wformat
3173         warning if size_t is not unsigned long.
3174
3175 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
3176
3177         * include/bits/shared_ptr_atomic.h (atomic::operator=(nullptr_t)):
3178         Add overload, as per LWG 3893.
3179         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
3180         Check assignment from nullptr.
3181
3182 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
3183
3184         * include/std/format (formatter<const charT[N], charT>): Do not
3185         define partial speclialization, as per LWG 3833.
3186         * testsuite/std/format/formatter/requirements.cc: Check it.
3187
3188 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
3189
3190         * include/std/utility (__cpp_lib_constexpr_algorithms): Define,
3191         as per LWG 3792.
3192         * testsuite/20_util/exchange/constexpr.cc: Check for it.
3193
3194 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
3195
3196         * include/std/version (__cpp_lib_format): Define.
3197         * testsuite/std/format/functions/format.cc: Check it.
3198
3199 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
3200
3201         * include/bits/basic_string.tcc (basic_string::resize_and_overwrite):
3202         Pass rvalues to the callback, as now allowed by LWG 3645.
3203         Enforce preconditions on the return value.
3204         * testsuite/21_strings/basic_string/capacity/char/resize_and_overwrite.cc:
3205         Adjust.
3206
3207 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
3208
3209         * include/std/format: Add a comment noting that the resolution
3210         of LWG 3720 has been applied..
3211
3212 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
3213
3214         * include/bits/regex.h (match_results): Add allocator-extended
3215         copy and move constructors, as per LWG 2195.
3216         * testsuite/28_regex/match_results/ctors/char/alloc.cc: New test.
3217
3218 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
3219
3220         * include/bits/stream_iterator.h (istream_iterator): Add
3221         constexpr to copy constructor, as per LWG 3600.
3222         * testsuite/24_iterators/istream_iterator/cons/constexpr.cc:
3223         Check copy construction.
3224
3225 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
3226
3227         * include/experimental/bits/simd_x86.h
3228         (_SimdImplX86::_S_divides): Replace test for __GCC_IEC_559 == 0
3229         with __RECIPROCAL_MATH__.
3230
3231 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
3232
3233         * include/experimental/bits/simd_detail.h: Don't define
3234         _GLIBCXX_SIMD_WORKAROUND_PR90993 for Clang.
3235         * include/experimental/bits/simd_x86.h (_S_divides): Remove
3236         check for __clang__.
3237
3238 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
3239
3240         * include/experimental/bits/simd_detail.h: Don't declare the
3241         simd API as constexpr with Clang.
3242         * include/experimental/bits/simd_x86.h (__movm): New.
3243         (_S_blend_avx512): Resolve FIXME. Implement blend using __movm
3244         and ?:.
3245         (_SimdImplX86::_S_masked_unary): Clang does not implement the
3246         same builtins. Implement the function using __movm, ?:, and -
3247         operators on vector_size types instead.
3248
3249 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
3250
3251         * testsuite/experimental/simd/tests/operators.cc: Clang doesn't
3252         define __GCC_IEC_559. Use __STDC_IEC_559__ instead.
3253
3254 2023-03-20  Jonathan Wakely  <jwakely@redhat.com>
3255
3256         * src/filesystem/ops-common.h (get_temp_directory_from_env): Fix
3257         formatting.
3258
3259 2023-03-20  Marek Polacek  <polacek@redhat.com>
3260
3261         PR c++/109159
3262         * testsuite/20_util/pair/cons/explicit_construct.cc: Adjust dg-error.
3263         * testsuite/20_util/tuple/cons/explicit_construct.cc: Likewise.
3264         * testsuite/23_containers/span/explicit.cc: Likewise.
3265
3266 2023-03-20  Jonathan Wakely  <jwakely@redhat.com>
3267
3268         PR libstdc++/109182
3269         * include/std/expected (expected<void>::expected(in_place_t)):
3270         Remove template-head.
3271
3272 2023-03-18  Jonathan Wakely  <jwakely@redhat.com>
3273
3274         PR libstdc++/109165
3275         * testsuite/18_support/coroutines/hash.cc: Use const object
3276         in second call.
3277
3278 2023-03-17  Jonathan Wakely  <jwakely@redhat.com>
3279
3280         PR libstdc++/109165
3281         * include/std/coroutine (hash<>::operator()): Add const.
3282         * testsuite/18_support/coroutines/hash.cc: New test.
3283
3284 2023-03-14  Patrick Palka  <ppalka@redhat.com>
3285
3286         PR libstdc++/109111
3287         * include/std/ranges (repeat_view): Remove redundant parentheses
3288         in requires-clause.
3289         (repeat_view::_Iterator): Correct the requires-clause.
3290
3291 2023-03-14  Patrick Palka  <ppalka@redhat.com>
3292
3293         * include/bits/stl_iterator.h (move_iterator::_S_iter_concept):
3294         Define.
3295         (__cpp_lib_move_iterator_concept): Define for C++20.
3296         (move_iterator::iterator_concept): Strengthen as per P2520R0.
3297         * include/std/version (__cpp_lib_move_iterator_concept): Define
3298         for C++20.
3299         * testsuite/24_iterators/move_iterator/p2520r0.cc: New test.
3300
3301 2023-03-14  Patrick Palka  <ppalka@redhat.com>
3302
3303         * include/bits/ranges_util.h (view_interface::empty): Add
3304         preferred overloads that use ranges::size when the range is
3305         sized as per LWG 3715.
3306         * testsuite/std/ranges/adaptors/lwg3715.cc: New test.
3307
3308 2023-03-14  Jonathan Wakely  <jwakely@redhat.com>
3309
3310         * include/bits/chrono.h (__is_duration_v, __is_time_point_v):
3311         Only define for C++17 and later.
3312
3313 2023-03-14  Jonathan Wakely  <jwakely@redhat.com>
3314
3315         * src/Makefile.am: Add comment about linker script fragments.
3316         * src/Makefile.in: Regenerate.
3317
3318 2023-03-14  Jonathan Wakely  <jwakely@redhat.com>
3319
3320         PR libstdc++/62196
3321         * include/bits/mask_array.h (mask_array): Add assertions to
3322         assignment operators.
3323         * include/std/valarray (valarray::operator[](valarray<bool>)):
3324         Add assertions.
3325         * testsuite/26_numerics/valarray/mask-1_neg.cc: New test.
3326         * testsuite/26_numerics/valarray/mask-2_neg.cc: New test.
3327         * testsuite/26_numerics/valarray/mask-3_neg.cc: New test.
3328         * testsuite/26_numerics/valarray/mask-4_neg.cc: New test.
3329         * testsuite/26_numerics/valarray/mask-5_neg.cc: New test.
3330         * testsuite/26_numerics/valarray/mask-6_neg.cc: New test.
3331         * testsuite/26_numerics/valarray/mask-7_neg.cc: New test.
3332         * testsuite/26_numerics/valarray/mask-8_neg.cc: New test.
3333         * testsuite/26_numerics/valarray/mask.cc: New test.
3334
3335 2023-03-13  Jakub Jelinek  <jakub@redhat.com>
3336
3337         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
3338         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
3339
3340 2023-03-13  Jonathan Wakely  <jwakely@redhat.com>
3341
3342         * doc/Makefile.am: Add comment referring to documentation.
3343         * doc/Makefile.in: Regenerate.
3344
3345 2023-03-13  Jonathan Wakely  <jwakely@redhat.com>
3346
3347         * doc/html/*: Regenerate.
3348
3349 2023-03-13  Jonny Grant  <jg@jguk.org>
3350
3351         * doc/xml/faq.xml: Update copyright year.
3352
3353 2023-03-13  Jonathan Wakely  <jwakely@redhat.com>
3354
3355         * include/bits/allocator.h: Fix typo in comment.
3356
3357 2023-03-12  Jakub Jelinek  <jakub@redhat.com>
3358
3359         * config/abi/pre/gnu.ver (CXXABI_1.3.14): Also export __bf16 tinfos
3360         if it isn't mangled as DF16b but u6__bf16.
3361
3362 2023-03-12  Gerald Pfeifer  <gerald@pfeifer.com>
3363
3364         * doc/xml/manual/documentation_hacking.xml: Move www.graphviz.org
3365         to https.
3366         * doc/html/manual/documentation_hacking.html: Regenerate.
3367
3368 2023-03-10  Jonathan Wakely  <jwakely@redhat.com>
3369
3370         PR libstdc++/109064
3371         * python/libstdcxx/v6/xmethods.py (SharedPtrUseCountWorker):
3372         Remove self-recursion in __init__. Add missing _supports.
3373         * testsuite/libstdc++-xmethods/shared_ptr.cc: Check use_count()
3374         and unique().
3375
3376 2023-03-09  Patrick Palka  <ppalka@redhat.com>
3377
3378         * include/std/ranges
3379         (cartesian_product_view::_Iterator::_Iterator): Remove
3380         constraint on default constructor as per LWG 3849.
3381         (cartesian_product_view::_Iterator::_M_prev): Adjust position
3382         of _Nm > 0 test as per LWG 3820.
3383         (cartesian_product_view::_Iterator::_M_advance): Perform bounds
3384         checking only on sized cartesian products.
3385         * testsuite/std/ranges/cartesian_product/1.cc (test08): New test.
3386
3387 2023-03-09  Patrick Palka  <ppalka@redhat.com>
3388
3389         PR libstdc++/109024
3390         * include/std/ranges (chunk_by_view::_M_pred): Remove DMI as per
3391         LWG 3796.
3392         (repeat_view::_M_pred): Likewise.
3393         * testsuite/std/ranges/adaptors/chunk_by/1.cc (test03): New test.
3394         * testsuite/std/ranges/repeat/1.cc (test05): New test.
3395
3396 2023-03-09  Patrick Palka  <ppalka@redhat.com>
3397
3398         PR libstdc++/108362
3399         * include/std/ranges (__detail::__can_single_view): New concept.
3400         (_Single::operator()): Constrain it.  Move [[nodiscard]] to the
3401         end of the function declarator.
3402         (__detail::__can_iota_view): New concept.
3403         (_Iota::operator()): Constrain it.  Move [[nodiscard]] to the
3404         end of the function declarator.
3405         (__detail::__can_istream_view): New concept.
3406         (_Istream::operator()): Constrain it.  Move [[nodiscard]] to the
3407         end of the function declarator.
3408         * testsuite/std/ranges/iota/iota_view.cc (test07): New test.
3409         * testsuite/std/ranges/istream_view.cc (test08): New test.
3410         * testsuite/std/ranges/single_view.cc (test07): New test.
3411
3412 2023-03-09  Patrick Palka  <ppalka@redhat.com>
3413
3414         PR libstdc++/107572
3415         * include/std/ranges (cartesian_product_view::end): When
3416         building the tuple of iterators, avoid calling ranges::begin on
3417         the first range if __empty_tail is false.
3418         * testsuite/std/ranges/cartesian_product/1.cc (test07): New test.
3419
3420 2023-03-09  Jonathan Wakely  <jwakely@redhat.com>
3421
3422         PR libstdc++/108882
3423         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Fix incorrect
3424         patterns.
3425
3426 2023-03-07  Jakub Jelinek  <jakub@redhat.com>
3427
3428         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
3429         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
3430         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
3431         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
3432         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
3433
3434 2023-03-07  Jonathan Wakely  <jwakely@redhat.com>
3435
3436         PR libstdc++/108882
3437         * config/abi/pre/gnu.ver (GLIBCXX_3.4.31): Adjust patterns to
3438         not match symbols in namespace std::__gnu_cxx11_ieee128.
3439         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Add patterns for
3440         std::__gnu_cxx11_ieee128::money_{get,put}.
3441
3442 2023-03-07  Jonathan Wakely  <jwakely@redhat.com>
3443
3444         * libsupc++/eh_personality.cc: Fix spelling in comment.
3445
3446 2023-03-03  Alexandre Oliva  <oliva@adacore.com>
3447
3448         * testsuite/30_threads/async/async.cc (test04): Initialize
3449         steady_start, renamed from steady_begin, next to slow_start.
3450         Increase tolerance for final wait.
3451
3452 2023-03-03  Alexandre Oliva  <oliva@adacore.com>
3453
3454         * testsuite/libstdc++-prettyprinters/80276.cc: Add
3455         std::string to debug info.
3456         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
3457
3458 2023-03-03  Alexandre Oliva  <oliva@adacore.com>
3459
3460         PR libstdc++/104852
3461         PR libstdc++/95989
3462         PR libstdc++/52590
3463         * include/bits/std_thread.h (thread::_M_thread_deps): New
3464         static implicitly-inline member function.
3465         (std::thread template ctor): Pass it to _M_start_thread.
3466         * src/c++11/thread.cc (thread::_M_start_thread): Name depend
3467         parameter, force it live on entry.
3468
3469 2023-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
3470
3471         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
3472         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
3473         Likewise.
3474         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
3475         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
3476         Likewise.
3477
3478 2023-03-01  Jonathan Wakely  <jwakely@redhat.com>
3479
3480         * include/bits/cow_string.h: Fix typo in comment.
3481
3482 2023-03-01  Jonathan Wakely  <jwakely@redhat.com>
3483
3484         * src/c++20/tzdb.cc (chrono::tzdb::current_zone()) Use "UTC" if
3485         current time zone cannot be determined.
3486         * testsuite/std/time/tzdb/1.cc: Remove conditions based on
3487         HAVE_TZDB macro and test all members unconditionally.
3488
3489 2023-02-28  Jonathan Wakely  <jwakely@redhat.com>
3490
3491         PR libstdc++/108952
3492         * include/bits/uses_allocator_args.h
3493         (uses_allocator_construction_args): Implement LWG 3527.
3494         * testsuite/20_util/pair/astuple/get-2.cc: New test.
3495         * testsuite/20_util/scoped_allocator/108952.cc: New test.
3496         * testsuite/20_util/uses_allocator/lwg3527.cc: New test.
3497
3498 2023-02-28  Jonathan Wakely  <jwakely@redhat.com>
3499
3500         PR libstdc++/108846
3501         * include/bits/stl_algobase.h (__copy_move<false, false, RA>)
3502         Add __assign_one static member function.
3503         (__copy_move<true, false, RA>): Likewise.
3504         (__copy_move<IsMove, true, RA>): Do not use memmove for a single
3505         value.
3506         (__copy_move_backward<IsMove, true, RA>): Likewise.
3507         * testsuite/25_algorithms/copy/108846.cc: New test.
3508         * testsuite/25_algorithms/copy_backward/108846.cc: New test.
3509         * testsuite/25_algorithms/copy_n/108846.cc: New test.
3510         * testsuite/25_algorithms/move/108846.cc: New test.
3511         * testsuite/25_algorithms/move_backward/108846.cc: New test.
3512
3513 2023-02-28  Jonathan Wakely  <jwakely@redhat.com>
3514
3515         * src/c++11/codecvt.cc: Add [[likely]] and [[unlikely]]
3516         attributes.
3517
3518 2023-02-27  Jonathan Wakely  <jwakely@redhat.com>
3519
3520         * include/bits/basic_ios.h (basic_ios::_M_setstate): Add
3521         caveat to comment.
3522         * include/bits/basic_string.h (resize_and_overwrite): Add
3523         doxygen comment.
3524
3525 2023-02-24  Matthias Kretz  <m.kretz@gsi.de>
3526
3527         * include/experimental/bits/simd.h: Line breaks and indenting
3528         fixed to follow the libstdc++ standard.
3529         * include/experimental/bits/simd_builtin.h: Likewise.
3530         * include/experimental/bits/simd_fixed_size.h: Likewise.
3531         * include/experimental/bits/simd_neon.h: Likewise.
3532         * include/experimental/bits/simd_ppc.h: Likewise.
3533         * include/experimental/bits/simd_scalar.h: Likewise.
3534         * include/experimental/bits/simd_x86.h: Likewise.
3535
3536 2023-02-24  Matthias Kretz  <m.kretz@gsi.de>
3537
3538         PR libstdc++/108030
3539         * include/experimental/bits/simd_fixed_size.h
3540         (_SimdImplFixedSize::_S_broadcast): Replace inline with
3541         _GLIBCXX_SIMD_INTRINSIC.
3542         (_SimdImplFixedSize::_S_generate): Likewise.
3543         (_SimdImplFixedSize::_S_load): Likewise.
3544         (_SimdImplFixedSize::_S_masked_load): Likewise.
3545         (_SimdImplFixedSize::_S_store): Likewise.
3546         (_SimdImplFixedSize::_S_masked_store): Likewise.
3547         (_SimdImplFixedSize::_S_min): Likewise.
3548         (_SimdImplFixedSize::_S_max): Likewise.
3549         (_SimdImplFixedSize::_S_complement): Likewise.
3550         (_SimdImplFixedSize::_S_unary_minus): Likewise.
3551         (_SimdImplFixedSize::_S_plus): Likewise.
3552         (_SimdImplFixedSize::_S_minus): Likewise.
3553         (_SimdImplFixedSize::_S_multiplies): Likewise.
3554         (_SimdImplFixedSize::_S_divides): Likewise.
3555         (_SimdImplFixedSize::_S_modulus): Likewise.
3556         (_SimdImplFixedSize::_S_bit_and): Likewise.
3557         (_SimdImplFixedSize::_S_bit_or): Likewise.
3558         (_SimdImplFixedSize::_S_bit_xor): Likewise.
3559         (_SimdImplFixedSize::_S_bit_shift_left): Likewise.
3560         (_SimdImplFixedSize::_S_bit_shift_right): Likewise.
3561         (_SimdImplFixedSize::_S_remquo): Add inline keyword (to be
3562         explicit about not always-inline, yet).
3563         (_SimdImplFixedSize::_S_isinf): Likewise.
3564         (_SimdImplFixedSize::_S_isfinite): Likewise.
3565         (_SimdImplFixedSize::_S_isnan): Likewise.
3566         (_SimdImplFixedSize::_S_isnormal): Likewise.
3567         (_SimdImplFixedSize::_S_signbit): Likewise.
3568
3569 2023-02-24  Matthias Kretz  <m.kretz@gsi.de>
3570
3571         PR libstdc++/108856
3572         * include/experimental/bits/simd_builtin.h
3573         (_SimdImplBuiltin::_S_masked_unary): More efficient
3574         implementation of masked inc-/decrement for integers and floats
3575         without AVX2.
3576         * include/experimental/bits/simd_x86.h
3577         (_SimdImplX86::_S_masked_unary): New. Use AVX512 masked subtract
3578         builtins for masked inc-/decrement.
3579
3580 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
3581
3582         * include/experimental/executor (executor): Constrain template
3583         constructors.
3584
3585 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
3586
3587         * include/experimental/internet (basic_endpoint): Add missing
3588         constexpr to comparison operators.
3589         * testsuite/experimental/net/internet/endpoint/cons.cc: New test.
3590
3591 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
3592
3593         * include/experimental/internet (network_v4::netmask()): Avoid
3594         undefined shift.
3595         (network_v4::broadcast()): Optimize and fix for targets with
3596         uint_least32_t wider than 32 bits.
3597         (network_v4::to_string(const Allocator&)): Fix for custom
3598         allocators and optimize using to_chars.
3599         (operator==(const network_v4&, const network_v4&)): Add missing
3600         constexpr.
3601         (operator==(const network_v6&, const network_v6&)): Likewise.
3602         * testsuite/experimental/net/internet/network/v4/cons.cc: New test.
3603         * testsuite/experimental/net/internet/network/v4/members.cc: New test.
3604
3605 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
3606
3607         * include/experimental/internet (address_4(const bytes_type&)):
3608         Use __builtin_bit_cast if available, otherwise convert to
3609         network byte order.
3610         (address_v4::to_bytes()): Likewise, but convert from network
3611         byte order.
3612         * testsuite/experimental/net/internet/address/v4/cons.cc: Fix
3613         incorrect tests. Check for constexpr too.
3614         * testsuite/experimental/net/internet/address/v4/creation.cc:
3615         Likewise.
3616         * testsuite/experimental/net/internet/address/v4/members.cc:
3617         Check that bytes_type is a standard-layout type.
3618
3619 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
3620
3621         * include/experimental/internet (address_v4::to_string):
3622         Optimize.
3623         * testsuite/experimental/net/internet/address/v4/members.cc:
3624         Check more addresses.
3625
3626 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
3627
3628         * include/ext/aligned_buffer.h (__aligned_buffer): Add
3629         diagnostic pragmas.
3630
3631 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
3632
3633         * testsuite/std/format/arguments/lwg3810.cc: Move dg-options
3634         before dg-do.
3635
3636 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
3637
3638         * testsuite/experimental/simd/tests/reductions.cc: Introduce
3639         max_distance as the type-dependent max error.
3640
3641 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
3642
3643         * include/experimental/bits/simd_builtin.h (_S_set): Compare as
3644         int. The actual range of these indexes is very small.
3645
3646 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
3647
3648         * include/experimental/bits/simd_x86.h (_S_bit_shift_left)
3649         (_S_bit_shift_right): Declare constexpr. The implementation was
3650         already expecting constexpr evaluation.
3651
3652 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
3653
3654         PR libstdc++/108030
3655         * include/experimental/bits/simd_detail.h
3656         (_GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA): Define as empty for
3657         __clang__.
3658
3659 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
3660
3661         PR libstdc++/108030
3662         * include/experimental/bits/simd.h (__vector_broadcast):
3663         Implement via __vector_broadcast_impl instead of
3664         __call_with_n_evaluations + 2 lambdas.
3665         (__vector_broadcast_impl): New.
3666
3667 2023-02-22  Alexandre Oliva  <oliva@adacore.com>
3668
3669         * src/c++11/shared_ptr.cc (__gnu_internal::get_mutex):
3670         Avoid destruction of the mutex pool.
3671
3672 2023-02-22  Alexandre Oliva  <oliva@adacore.com>
3673
3674         * testsuite/27_io/basic_ofstream/open/char/noreplace.cc: xfail
3675         on vxworks.
3676         * testsuite/27_io/basic_ofstream/open/wchar_t/noreplace.cc:
3677         Likewise.
3678
3679 2023-02-22  Alexandre Oliva  <oliva@adacore.com>
3680
3681         * testsuite/17_intro/names.cc: Undef func on vxworks >= 7 in
3682         kernel mode.
3683
3684 2023-02-20  Andreas Schwab  <schwab@linux-m68k.org>
3685
3686         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
3687
3688 2023-02-20  Matthias Kretz  <m.kretz@gsi.de>
3689
3690         * include/experimental/bits/simd.h (__extract_part, split):
3691         Use reserved name for template parameter.
3692
3693 2023-02-20  Andreas Schwab  <schwab@suse.de>
3694
3695         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
3696
3697 2023-02-18  Gerald Pfeifer  <gerald@pfeifer.com>
3698
3699         * doc/xml/faq.xml: Switch two links to www.open-std.org to https.
3700         * doc/html/faq.html: Regenerate.
3701
3702 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
3703
3704         * include/experimental/bits/simd_math.h (__hypot): Bitcasting
3705         between scalars requires the __bit_cast helper function instead
3706         of simd_bit_cast.
3707
3708 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
3709
3710         * include/experimental/bits/simd_x86.h
3711         (_SimdImplX86::_S_not_equal_to, _SimdImplX86::_S_less)
3712         (_SimdImplX86::_S_less_equal): Do not call
3713         __builtin_is_constant_evaluated in constexpr-if.
3714
3715 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
3716
3717         * testsuite/experimental/simd/tests/bits/verify.h
3718         (verify::verify): Use %zx for size_t in format string.
3719
3720 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
3721
3722         * testsuite/experimental/simd/generate_makefile.sh: Generate and
3723         pre-compile pch.h, which includes all headers that do not depend
3724         on command-line macros.
3725         * testsuite/experimental/simd/tests/bits/main.h: New file.
3726         (iterate_abis, main): Moved from verify.h.
3727         * testsuite/experimental/simd/tests/bits/verify.h
3728         (iterate_abis, main): Moved to main.h.
3729         * testsuite/experimental/simd/tests/bits/conversions.h: Add
3730         include guard.
3731         (genHalfBits): Simplify.
3732         * testsuite/experimental/simd/tests/bits/make_vec.h: Add include
3733         guard.
3734         (make_alternating_mask): Moved from mask_loadstore.
3735         * testsuite/experimental/simd/tests/bits/mathreference.h: Add
3736         include guard.
3737         * testsuite/experimental/simd/tests/bits/test_values.h: Ditto.
3738         * testsuite/experimental/simd/tests/mask_loadstore.cc
3739         (make_mask, make_alternating_mask): Removed.
3740         * testsuite/experimental/simd/tests/mask_reductions.cc: Ditto.
3741         * testsuite/experimental/simd/tests/operators.cc (genHalfBits):
3742         Removed.
3743         * testsuite/experimental/simd/tests/abs.cc: Only include
3744         bits/main.h.
3745         Ditto.
3746         * testsuite/experimental/simd/tests/algorithms.cc: Ditto.
3747         * testsuite/experimental/simd/tests/broadcast.cc: Ditto.
3748         * testsuite/experimental/simd/tests/casts.cc: Ditto.
3749         * testsuite/experimental/simd/tests/fpclassify.cc: Ditto.
3750         * testsuite/experimental/simd/tests/frexp.cc: Ditto.
3751         * testsuite/experimental/simd/tests/generator.cc: Ditto.
3752         * testsuite/experimental/simd/tests/hypot3_fma.cc: Ditto.
3753         * testsuite/experimental/simd/tests/integer_operators.cc: Ditto.
3754         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
3755         * testsuite/experimental/simd/tests/loadstore.cc: Ditto.
3756         * testsuite/experimental/simd/tests/logarithm.cc: Ditto.
3757         * testsuite/experimental/simd/tests/mask_broadcast.cc: Ditto.
3758         * testsuite/experimental/simd/tests/mask_conversions.cc: Ditto.
3759         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: Ditto.
3760         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: Ditto.
3761         * testsuite/experimental/simd/tests/mask_operators.cc: Ditto.
3762         * testsuite/experimental/simd/tests/math_1arg.cc: Ditto.
3763         * testsuite/experimental/simd/tests/math_2arg.cc: Ditto.
3764         * testsuite/experimental/simd/tests/operator_cvt.cc: Ditto.
3765         * testsuite/experimental/simd/tests/reductions.cc: Ditto.
3766         * testsuite/experimental/simd/tests/remqo.cc: Ditto.
3767         * testsuite/experimental/simd/tests/simd.cc: Ditto.
3768         * testsuite/experimental/simd/tests/sincos.cc: Ditto.
3769         * testsuite/experimental/simd/tests/split_concat.cc: Ditto.
3770         * testsuite/experimental/simd/tests/splits.cc: Ditto.
3771         * testsuite/experimental/simd/tests/trigonometric.cc: Ditto.
3772         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: Ditto.
3773         * testsuite/experimental/simd/tests/where.cc: Ditto.
3774
3775 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
3776
3777         * testsuite/experimental/simd/README.md: Document the timeout
3778         and timeout-factor directives. Minor typo fixed.
3779
3780 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
3781
3782         PR libstdc++/108030
3783         * include/experimental/bits/simd_detail.h: Define
3784         _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA.
3785         * include/experimental/bits/simd.h: Annotate lambdas with
3786         _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA.
3787         * include/experimental/bits/simd_builtin.h: Ditto.
3788         * include/experimental/bits/simd_converter.h: Ditto.
3789         * include/experimental/bits/simd_fixed_size.h: Ditto.
3790         * include/experimental/bits/simd_math.h: Ditto.
3791         * include/experimental/bits/simd_neon.h: Ditto.
3792         * include/experimental/bits/simd_x86.h: Ditto.
3793
3794 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
3795
3796         * include/experimental/bits/simd.h
3797         (_SimdWrapper::_M_is_constprop_none_of)
3798         (_SimdWrapper::_M_is_constprop_all_of): Return false unless the
3799         computed result still satisfies __builtin_constant_p.
3800
3801 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
3802
3803         * testsuite/std/format/arguments/lwg3810.cc: Replace UTF-8
3804         ellipsis character.
3805
3806 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
3807
3808         * include/Makefile.am: Add new header.
3809         * include/Makefile.in: Regenerate.
3810         * include/experimental/synchronized_value: New file.
3811         * testsuite/experimental/synchronized_value.cc: New test.
3812
3813 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
3814
3815         * include/experimental/optional: Fix header name in comment.
3816
3817 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
3818
3819         * include/std/format (__format::_Arg_store): New class template.
3820         (basic_format_args): Remove nested type _Store and add deduction
3821         guide from _Arg_store.
3822         (basic_format_arg, make_format_args): Adjust.
3823         * testsuite/std/format/arguments/lwg3810.cc: New test.
3824
3825 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
3826
3827         * include/bits/stl_pair.h (pair) [C++20]: Add non-dangling
3828         constraints to constructors and add deleted overloads for the
3829         dangling cases, as per P2255R2.
3830         (pair) [!C++20 && _GLIBCXX_DEBUG]: Add static assertions to
3831         make dangling cases ill-formed.
3832         * testsuite/20_util/pair/dangling_ref.cc: New test.
3833
3834 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
3835
3836         * testsuite/17_intro/names_pstl.cc: Require et tbb_backend.
3837
3838 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
3839
3840         * include/ext/throw_allocator.h: Use reserved names for
3841         parameters.
3842
3843 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
3844
3845         * testsuite/17_intro/names_pstl.cc: Add space after effective
3846         target name.
3847
3848 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
3849
3850         * include/pstl/algorithm_fwd.h (__pattern_search_n)
3851         (__brick_unique_copy, __brick_adjacent_find)
3852         (__brick_generate_n, __pattern_generate_n): Use reserved names
3853         for parameters.
3854         * include/pstl/algorithm_impl.h (__brick_unique_copy)
3855         (__pattern_reverse, __brick_generate_n): Likewise.
3856         * include/pstl/execution_impl.h (__prefer_unsequenced_tag)
3857         (__prefer_parallel_tag): Likewise.
3858         * include/pstl/glue_algorithm_impl.h (transform): Likewise.
3859         * include/pstl/glue_numeric_defs.h (adjacent_difference):
3860         Likewise.
3861         * include/pstl/numeric_impl.h (__brick_adjacent_difference):
3862         Likewise.
3863         * include/pstl/parallel_backend_tbb.h (__merge_func): Likewise.
3864         * include/pstl/unseq_backend_simd.h (_Combiner)
3865         (__simd_min_element, __simd_minmax_element): Likewise.
3866         * testsuite/17_intro/names_pstl.cc: New test.
3867
3868 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
3869
3870         * include/bits/fs_ops.h (create_directory): Use reserved name
3871         for parameter.
3872         * include/bits/ranges_algo.h (__contains_subrange_fn):
3873         Likewise.
3874         * include/bits/regex_automaton.h (_State_base::_M_print):
3875         Likewise.
3876         * include/bits/regex_automaton.tcc(_State_base::_M_print):
3877         Likewise.
3878         * include/bits/regex_scanner.tcc(_Scanner::_M_print): Likewise.
3879         * include/experimental/bits/fs_ops.h (create_directory):
3880         Likewise.
3881         * include/std/mutex (timed_mutex::_M_clocklock): Likewise.
3882         (recursive_timed_mutex:_M_clocklock): Likewise.
3883         * include/std/tuple (basic_common_reference): Likewise.
3884         * libsupc++/cxxabi_init_exception.h
3885         (__cxa_init_primary_exception): Likewise.
3886         * testsuite/17_intro/names.cc: Add checks.
3887
3888 2023-02-14  Gerald Pfeifer  <gerald@pfeifer.com>
3889
3890         * doc/xml/manual/status_cxx2017.xml: Update an open-std.org link
3891         to www.open-std.org and https.
3892         * doc/html/manual/status.html: Regenerate.
3893
3894 2023-02-14  Thomas W Rodgers  <rodgert@twrodgers.com>
3895
3896         PR libstdc++/103934
3897         * include/std/atomic (atomic_flag_wait): Add.
3898         (atomic_flag_wait_explicit): Add.
3899         (atomic_flag_notify): Add.
3900         (atomic_flag_notify_explicit): Add.
3901         * testsuite/29_atomics/atomic_flag/wait_notify/1.cc:
3902         Add test case to cover missing atomic_flag free functions.
3903
3904 2023-02-14  Thomas W Rodgers  <rodgert@twrodgers.com>
3905
3906         PR libstdc++/103934
3907         * include/std/atomic (atomic_flag_test): Add.
3908         (atomic_flag_test_explicit): Add.
3909         * testsuite/29_atomics/atomic_flag/test/explicit.cc: Add
3910         test case to cover missing atomic_flag free functions.
3911         * testsuite/29_atomics/atomic_flag/test/implicit.cc:
3912         Likewise.
3913
3914 2023-02-13  Gerald Pfeifer  <gerald@pfeifer.com>
3915
3916         * doc/xml/manual/policy_data_structures_biblio.xml: Adjust
3917         "The Component Object Model" reference.
3918         * doc/html/manual/policy_data_structures.html: Regenerate.
3919
3920 2023-02-12  Gerald Pfeifer  <gerald@pfeifer.com>
3921
3922         * doc/xml/manual/containers.xml: Tweak a link to N1780
3923         (C++ standard).
3924         * doc/html/manual/associative.html: Regenerate.
3925
3926 2023-02-12  Gerald Pfeifer  <gerald@pfeifer.com>
3927
3928         * doc/xml/manual/ctype.xml: Change www.unix.org to unix.org.
3929         * doc/html/manual/facets.html: Regenerate.
3930
3931 2023-02-11  Gerald Pfeifer  <gerald@pfeifer.com>
3932
3933         * doc/xml/manual/policy_data_structures_biblio.xml: Update
3934         link to "Worst-case efficient priority queues".
3935         * doc/html/manual/policy_data_structures.html: Regenerate.
3936
3937 2023-02-06  Arsen Arsenović  <arsen@aarsen.me>
3938
3939         * doc/xml/manual/using.xml: Document newly-freestanding
3940         headers and the effect of the -ffreestanding flag.
3941         * doc/xml/manual/status_cxx2023.xml: Document P1642R11 as
3942         completed.
3943         * doc/xml/manual/configure.xml: Document that hosted installs
3944         respect __STDC_HOSTED__.
3945         * doc/xml/manual/test.xml: Document how to run tests in
3946         freestanding mode.
3947         * doc/html/*: Regenerate.
3948
3949 2023-02-06  Jonathan Wakely  <jwakely@redhat.com>
3950
3951         * include/bits/ranges_algo.h (__find_last_fn): Rename T to _Tp.
3952         (__find_last_if_fn): Likewise.
3953
3954 2023-02-06  Jonathan Wakely  <jwakely@redhat.com>
3955
3956         * include/std/type_traits: Add diagnostic pragmas around
3957         references to deprecated std::aligned_storage and
3958         std::aligned_union traits.
3959         * testsuite/20_util/aligned_storage/requirements/alias_decl.cc:
3960         Add dg-warning for et c++23.
3961         * testsuite/20_util/aligned_storage/requirements/explicit_instantiation.cc:
3962         Likewise.
3963         * testsuite/20_util/aligned_storage/value.cc: Likewise.
3964         * testsuite/20_util/aligned_union/1.cc: Likewise.
3965         * testsuite/20_util/aligned_union/requirements/alias_decl.cc:
3966         Likewise.
3967
3968 2023-02-06  Nathaniel Shead  <nathanieloshead@gmail.com>
3969
3970         * doc/doxygen/user.cfg.in (PREDEFINED): Add new macros.
3971         * include/bits/c++config (_GLIBCXX23_DEPRECATED)
3972         (_GLIBCXX23_DEPRECATED_SUGGEST): New macros.
3973         * include/std/type_traits (aligned_storage, aligned_union)
3974         (aligned_storage_t, aligned_union_t): Deprecate for C++23.
3975         * testsuite/20_util/aligned_storage/deprecated-2b.cc: New test.
3976         * testsuite/20_util/aligned_union/deprecated-2b.cc: New test.
3977
3978 2023-02-06  Nathaniel Shead  <nathanieloshead@gmail.com>
3979
3980         * doc/doxygen/user.cfg.in (PREDEFINED): Update macros.
3981         * include/bits/c++config (_GLIBCXX20_DEPRECATED): Make
3982         consistent with other 'deprecated' macros.
3983         * include/std/type_traits (is_pod, is_pod_v): Use
3984         _GLIBCXX20_DEPRECATED_SUGGEST instead.
3985
3986 2023-02-06  Arsen Arsenović  <arsen@aarsen.me>
3987
3988         * Makefile.am [!_GLIBCXX_HOSTED]: Enable src/ subdirectory.
3989         * Makefile.in: Regenerate.
3990         * src/Makefile.am [!_GLIBCXX_HOSTED]: Omit compatibility files.
3991         There's no history to be compatible with.
3992         * src/c++11/Makefile.am [!_GLIBCXX_HOSTED]: Omit hosted-only
3993         source files from the build.
3994         * src/c++17/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
3995         * src/c++20/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
3996         * src/c++98/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
3997         * src/Makefile.in: Regenerate.
3998         * src/c++11/Makefile.in: Regenerate.
3999         * src/c++17/Makefile.in: Regenerate.
4000         * src/c++20/Makefile.in: Regenerate.
4001         * src/c++98/Makefile.in: Regenerate.
4002
4003 2023-02-06  Jonathan Wakely  <jwakely@redhat.com>
4004
4005         * src/Makefile.am [GLIBCXX_HOSTED] (SUBDIRS): Do not add
4006         filesystem, libbacktrace and experimental.
4007         * src/Makefile.in: Regenerate.
4008
4009 2023-02-04  Hans-Peter Nilsson  <hp@axis.com>
4010
4011         PR libstdc++/108672
4012         * include/pstl/unseq_backend_simd.h (__simd_or): Use __INT32_TYPE__
4013         instead of int32_t.
4014
4015 2023-02-04  Gerald Pfeifer  <gerald@pfeifer.com>
4016
4017         * doc/xml/manual/documentation_hacking.xml: Adjust link to pdftex.
4018         * doc/html/manual/documentation_hacking.html: Regenerate.
4019
4020 2023-02-04  François Dumont  <fdumont@gcc.gnu.org>
4021
4022         * include/bits/basic_string.h (operator=(basic_string&&)): Transfer move-to
4023         storage to the move-from instance when allocators are equal.
4024         * testsuite/21_strings/basic_string/allocator/char/move_assign.cc (test04):
4025         New test case.
4026
4027 2023-02-03  Samuel Thibault  <samuel.thibault@gnu.org>
4028
4029         * config/os/gnu-linux/os_defines.h [!__linux__]
4030         (_GLIBCXX_NATIVE_THREAD_ID, _GLIBCXX_GTHREAD_USE_WEAK): Do not define.
4031
4032 2023-02-03  Patrick Palka  <ppalka@redhat.com>
4033
4034         * include/bits/ranges_algo.h (__find_last_fn, find_last):
4035         Define.
4036         (__find_last_if_fn, find_last_if): Define.
4037         (__find_last_if_not_fn, find_last_if_not): Define.
4038         * testsuite/25_algorithms/find_last/1.cc: New test.
4039         * testsuite/25_algorithms/find_last_if/1.cc: New test.
4040         * testsuite/25_algorithms/find_last_if_not/1.cc: New test.
4041
4042 2023-02-03  Patrick Palka  <ppalka@redhat.com>
4043
4044         * include/bits/ranges_algo.h (out_value_result): Define.
4045         (iota_result): Define.
4046         (__iota_fn, iota): Define.
4047         * testsuite/25_algorithms/iota/1.cc: New test.
4048
4049 2023-02-03  Patrick Palka  <ppalka@redhat.com>
4050
4051         * include/bits/ranges_algo.h (__contains_fn, contains): Define.
4052         (__contains_subrange_fn, contains_subrange): Define.
4053         * testsuite/25_algorithms/contains/1.cc: New test.
4054         * testsuite/25_algorithms/contains_subrange/1.cc: New test.
4055
4056 2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>
4057
4058         * doc/xml/manual/abi.xml: Tweak link to ABIcheck project.
4059         * doc/html/manual/abi.html: Regenerate.
4060
4061 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
4062
4063         * src/filesystem/ops-common.h [AVR] (__unsupported): Always use
4064         errc::function_not_supported instead of errc::not_supported.
4065
4066 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
4067
4068         * include/std/sstream  (basic_stringbuf::view): Define for old
4069         std::string ABI.
4070         (basic_istringstream::view, basic_0stringstream::view)
4071         (basic_stringstream::view): Likewise.
4072         * testsuite/27_io/basic_istringstream/view/char/1.cc: Remove
4073         { dg-require-effective-target cxx11_abi }.
4074         * testsuite/27_io/basic_istringstream/view/wchar_t/1.cc:
4075         Likewise.
4076         * testsuite/27_io/basic_ostringstream/view/char/1.cc: Likewise.
4077         * testsuite/27_io/basic_ostringstream/view/wchar_t/1.cc:
4078         Likewise.
4079         * testsuite/27_io/basic_stringbuf/view/char/1.cc: Likewise.
4080         * testsuite/27_io/basic_stringbuf/view/wchar_t/1.cc: Likewise.
4081         * testsuite/27_io/basic_stringstream/view/char/1.cc: Likewise.
4082         * testsuite/27_io/basic_stringstream/view/wchar_t/1.cc:
4083         Likewise.
4084
4085 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
4086
4087         PR libstdc++/108636
4088         * config/abi/pre/gnu.ver (GLIBCXX_3.4.31): Export shared_ptr
4089         conversion operators for directory iterator comparisons with
4090         std::default_sentinel_t.
4091         * include/bits/fs_path.h (path::path(string_view, _Type))
4092         (path::_Cmpt::_Cmpt(string_view, _Type, size_t)): Move inline
4093         definitions to ...
4094         * src/c++17/fs_path.cc: ... here.
4095         * testsuite/27_io/filesystem/path/108636.cc: New test.
4096
4097 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
4098
4099         * include/std/variant (variant::operator=): Implement resolution
4100         of LWG 3585.
4101         * testsuite/20_util/variant/lwg3585.cc: New test.
4102
4103 2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>
4104
4105         * doc/xml/manual/using_exceptions.xml: Update a www.open-std.org
4106         link to https.
4107         * doc/html/manual/using_exceptions.html: Regenerate.
4108
4109 2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>
4110
4111         * doc/xml/manual/debug.xml: Fix link to online GDB manual.
4112         * doc/html/manual/debug.html: Regenerate.
4113
4114 2023-02-01  Jonathan Wakely  <jwakely@redhat.com>
4115
4116         * src/c++11/random.cc (random_device::_M_fini): Do not try to
4117         close the file handle if the target doesn't support the
4118         /dev/random and /dev/urandom files.
4119
4120 2023-02-01  Jonathan Wakely  <jwakely@redhat.com>
4121
4122         * config/os/generic/error_constants.h (errc::value_too_large)
4123         [__AVR__]: Define.
4124         * src/c++11/system_error.cc
4125         (system_category::default_error_condition) [__AVR__]: Only match
4126         recognize values equal to EDOM, ERANGE, ENOSYS and EINTR.
4127         * src/c++17/fs_ops.cc (fs::current_path) [__AVR__]: Do not check
4128         for ENOENT etc. in switch.
4129         (fs::remove_all) [__AVR__]: Likewise.
4130         * src/filesystem/ops-common.h [__AVR__]: Do not use POSIX open,
4131         close etc.
4132
4133 2023-02-01  Jonathan Wakely  <jwakely@redhat.com>
4134
4135         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR) [avr-*-*, msp430-*-*]: Set
4136         embed_zoneinfo=no
4137         * configure: Regenerate.
4138
4139 2023-02-01  Hans-Peter Nilsson  <hp@axis.com>
4140
4141         PR testsuite/108632
4142         * testsuite/std/time/hh_mm_ss/1.cc (size): Add empty
4143         struct at end of S0.
4144
4145 2023-01-30  Gerald Pfeifer  <gerald@pfeifer.com>
4146
4147         * doc/xml/manual/shared_ptr.xml: Move links from both
4148         http://open-std.org and http://www.open-std.org to
4149         https://www.open-std.org.
4150         * doc/html/manual/memory.html: Regenerate.
4151
4152 2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>
4153
4154         * doc/xml/manual/appendix_contributing.xml: Adjust link to
4155         ISO C++ standard at ANSI.
4156         Move link to www.open-std.org to https.
4157         * doc/html/manual/appendix_contributing.html: Regenerate.
4158
4159 2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>
4160
4161         * doc/xml/manual/documentation_hacking.xml: Move sourceforge.net
4162         links to https.
4163         * doc/html/manual/documentation_hacking.html: Regenerate.
4164
4165 2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>
4166
4167         * doc/xml/manual/abi.xml: Update www.open-std.org link to https.
4168         * doc/html/manual/abi.html: Regenerate.
4169
4170 2023-01-27  Jakub Jelinek  <jakub@redhat.com>
4171
4172         PR libstdc++/108568
4173         * testsuite/17_intro/names.cc (__unused): For linux or GNU hurd
4174         include features.h if present and then check __GLIBC__ and
4175         __GLIBC_MINOR__ macros for glibc prior to 2.19, instead of testing
4176         __GLIBC_PREREQ which isn't defined yet.
4177
4178 2023-01-27  Jonathan Wakely  <jwakely@redhat.com>
4179
4180         * src/c++20/tzdb.cc (tzdata_stream): Use constant instead of
4181         string literal.
4182
4183 2023-01-27  Jonathan Wakely  <jwakely@redhat.com>
4184
4185         PR libstdc++/108554
4186         * testsuite/23_containers/map/modifiers/108554.cc: Use dg-bogus.
4187
4188 2023-01-26  Jonathan Wakely  <jwakely@redhat.com>
4189
4190         * src/c++20/tzdb.cc (operator>>(istream&, ZoneInfo&)): Allow
4191         rules named "+" for compatibility with older tzdata.zi files.
4192
4193 2023-01-26  Jonathan Wakely  <jwakely@redhat.com>
4194
4195         PR libstdc++/108554
4196         * include/bits/stl_tree.h (_Rb_tree_insert_and_rebalance): Add
4197         nonnull attribute.
4198         (_Rb_tree_rebalance_for_erase): Add nonnull and returns_nonnull
4199         attributes.
4200         * testsuite/23_containers/map/modifiers/108554.cc: New test.
4201
4202 2023-01-26  Jonathan Wakely  <jwakely@redhat.com>
4203
4204         PR libstdc++/108530
4205         * src/c++20/tzdb.cc (current_zone): Look for TIMEZONE or ZONE in
4206         /etc/sysconfig/clock, not DEFAULT_TIMEZONE.
4207
4208 2023-01-26  Gerald Pfeifer  <gerald@pfeifer.com>
4209
4210         * doc/xml/manual/intro.xml: Update links to www.open-std.org to
4211         use https.
4212         * doc/html/manual/bugs.html: Regenerate.
4213
4214 2023-01-24  Jonathan Wakely  <jwakely@redhat.com>
4215
4216         PR libstdc++/108530
4217         * src/c++20/tzdb.cc (current_zone): Look for DEFAULT_TIMEZONE in
4218         /etc/sysconfig/clock.
4219
4220 2023-01-24  Jonathan Wakely  <jwakely@redhat.com>
4221
4222         PR libstdc++/102301
4223         * include/bits/ranges_base.h: Include <bits/stl_iterator.h> for
4224         std::make_reverse_iterator.
4225         * include/std/tuple: Include <bits/ranges_util.h> for subrange.
4226         (make_from_tuple): Add static assertion from P2255 to diagnose
4227         dangling references.
4228         * testsuite/20_util/tuple/make_from_tuple/dangling_ref.cc: New test.
4229         * testsuite/20_util/tuple/make_from_tuple/tuple_like.cc: New test.
4230
4231 2023-01-23  François Dumont  <fdumont@gcc.gnu.org>
4232
4233         * include/debug/safe_iterator.h (_Safe_iterator<>::_Unchecked): New.
4234         (_Safe_iterator(const _Safe_iterator&, _Unchecked)): New.
4235         (_Safe_iterator::operator++(int)): Use latter.
4236         (_Safe_iterator::operator--(int)): Likewise.
4237         (_Safe_iterator(_Iterator, const _Safe_sequence_base*)): Remove !_M_insular()
4238         check.
4239         * include/debug/safe_local_iterator.h (_Safe_local_iterator<>::_Unchecked):
4240         New.
4241         (_Safe_local_iterator(const _Safe_local_iterator&, _Unchecked)): New.
4242         (_Safe_local_iterator::operator++(int)): Use latter.
4243         * src/c++11/debug.cc (_S_debug_messages): Add as comment the _Debug_msg_id
4244         entry associated to the array entry.
4245
4246 2023-01-18  Jonathan Wakely  <jwakely@redhat.com>
4247
4248         * include/bits/fs_path.h (u8path): Add deprecated attribute.
4249         * testsuite/27_io/filesystem/path/construct/90281.cc: Add
4250         -Wno-deprecated-declarations for C++20 and later.
4251         * testsuite/27_io/filesystem/path/factory/u8path-char8_t.cc:
4252         Likewise.
4253         * testsuite/27_io/filesystem/path/factory/u8path.cc: Likewise.
4254         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
4255         * testsuite/27_io/filesystem/path/factory/u8path-depr.cc: New test.
4256
4257 2023-01-18  Jonathan Wakely  <jwakely@redhat.com>
4258
4259         * include/bits/random.h (random_device) [!_GLIBCXX_USE_DEV_RANDOM]:
4260         Always call _M_fini and _M_getentropy.
4261
4262 2023-01-18  Gerald Pfeifer  <gerald@pfeifer.com>
4263
4264         * doc/xml/manual/policy_data_structures_biblio.xml: Adjust links
4265         to www.open-std.org to use https.
4266         (COM: Component Model Object Technologies): Rename from...
4267         (The Component Object Model): ...to.
4268         * doc/html/manual/policy_data_structures.html: Regenerate.
4269
4270 2023-01-18  Dimitrij Mijoski  <dmjpp@hotmail.com>
4271
4272         * testsuite/22_locale/codecvt/codecvt_unicode.cc: Simplify.
4273         * testsuite/22_locale/codecvt/codecvt_unicode.h: Simplify.
4274         * testsuite/22_locale/codecvt/codecvt_unicode_wchar_t.cc: Simplify.
4275
4276 2023-01-17  Jonathan Wakely  <jwakely@redhat.com>
4277
4278         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Check $target_os instead
4279         of $host. Fix check for file being present during native build.
4280         * configure: Regenerate.
4281
4282 2023-01-17  Martin Liska  <mliska@suse.cz>
4283
4284         * src/libbacktrace/Makefile.in: Regenerate.
4285
4286 2023-01-16  Jonathan Wakely  <jwakely@redhat.com>
4287
4288         * src/c++20/tzdb.cc (_GLIBCXX_USE_CXX11_ABI): Define to 1.
4289
4290 2023-01-16  Jonathan Wakely  <jwakely@redhat.com>
4291
4292         PR libstdc++/108413
4293         * include/c_compatibility/stdatomic.h: Change copyright line to
4294         be consistent with other headers contributed under DCO terms.
4295         * include/std/expected: Add full stop to copyright line.
4296         * src/c++20/tzdb.cc: Likewise.
4297
4298 2023-01-15  Gerald Pfeifer  <gerald@pfeifer.com>
4299
4300         * doc/xml/manual/status_cxx2014.xml: Switch www.open-std.org to
4301         https.
4302         * doc/xml/manual/status_cxx2017.xml: Ditto.
4303         * doc/xml/manual/status_cxx2020.xml: Ditto.
4304         * doc/xml/manual/status_cxx2023.xml: Ditto.
4305         * doc/html/manual/status.html: Regenerate.
4306
4307 2023-01-15  Jonathan Wakely  <jwakely@redhat.com>
4308
4309         * testsuite/std/time/tzdb_list/1.cc: Remove dg-xfail-run-if
4310         and fail gracefully if defining the weak symbol doesn't work.
4311
4312 2023-01-15  François Dumont  <fdumont@gcc.gnu.org>
4313
4314         PR libstdc++/108288
4315         * include/debug/safe_iterator.h (_Safe_iterator<>::operator++(int)): Extend deadlock
4316         fix to other iterator category.
4317         (_Safe_iterator<>::operator--(int)): Likewise.
4318         * include/debug/safe_local_iterator.h (_Safe_local_iterator<>::operator++(int)):
4319         Fix deadlock.
4320         * testsuite/util/debug/unordered_checks.h (invalid_local_iterator_pre_increment): New.
4321         (invalid_local_iterator_post_increment): New.
4322         * testsuite/23_containers/unordered_map/debug/invalid_local_iterator_post_increment_neg.cc:
4323         New test.
4324         * testsuite/23_containers/unordered_map/debug/invalid_local_iterator_pre_increment_neg.cc:
4325         New test.
4326
4327 2023-01-15  Jonathan Wakely  <jwakely@redhat.com>
4328
4329         * testsuite/30_threads/jthread/jthread.cc: Remove -pthread from
4330         dg-options.
4331
4332 2023-01-15  Jonathan Wakely  <jwakely@redhat.com>
4333
4334         * testsuite/std/time/clock/utc/io.cc: Use ctype to widen char.
4335
4336 2023-01-14  Björn Schäpers  <bjoern@hazardy.de>
4337
4338         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Add check for
4339         windows.h. Add pecoff as FORMAT_FILE.
4340         * config.h.in: Regenerate.
4341         * configure: Regenerate.
4342         * src/libbacktrace/Makefile.am: Regenerate.
4343         * src/libbacktrace/Makefile.in: Add pecoff.c as FORMAT_FILE.
4344
4345 2023-01-14  Björn Schäpers  <bjoern@hazardy.de>
4346
4347         * include/std/stacktrace (stacktrace_entry::_S_demangle): Use
4348         raw __name if __cxa_demangle could not demangle it.
4349
4350 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
4351
4352         PR libstdc++/108409
4353         * src/c++20/tzdb.cc (current_zone()) [_AIX]: Use TZ environment
4354         variable.
4355
4356 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
4357
4358         * src/c++20/tzdb.cc (TZDB_DISABLED): Disable all code for
4359         loading tzdb.
4360         * testsuite/std/time/tzdb/leap_seconds.cc: Require tzdb
4361         effective target.
4362         * testsuite/std/time/tzdb_list/1.cc: Likewise.
4363
4364 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
4365
4366         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Replace the
4367         --with-libstdcxx-zoneinfo-dir configure option with
4368         --with-libstdcxx-zoneinfo with yes/no/static choices as well as
4369         a directory.
4370         * config.h.in: Regenerate.
4371         * configure: Regenerate.
4372         * doc/xml/manual/configure.xml: Document configure option.
4373         * doc/html/manual/configure.html: Regenerate.
4374         * src/c++20/Makefile.am: Generate tzdata.zi.h header.
4375         * src/c++20/Makefile.in: Regenerate.
4376         * src/c++20/tzdb.cc (__gnu_cxx::zoneinfo_dir_override): Return a
4377         null pointer if no directory is configured.
4378         (zoneinfo_dir): Replace with ...
4379         (zoneinfo_file): New function.
4380         (tzdata_stream): New istream class.
4381         (remote_version, reload_tzdb): Use tzdata_stream.
4382         * testsuite/lib/libstdc++.exp (check_effective_target_tzdb):
4383         Check new _GLIBCXX_STATIC_TZDATA macro and ignore presence of
4384         tzdata.zi file in default location.
4385         * src/c++20/tzdata.zi: New file.
4386
4387 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
4388
4389         * include/bits/chrono_io.h (operator<<): Fix syntax errors.
4390         * testsuite/std/time/month_day/io.cc: New test.
4391         * testsuite/std/time/month_day_last/io.cc: New test.
4392         * testsuite/std/time/month_weekday/io.cc: New test.
4393         * testsuite/std/time/month_weekday_last/io.cc: New test.
4394         * testsuite/std/time/weekday_indexed/io.cc: New test.
4395         * testsuite/std/time/weekday_last/io.cc: New test.
4396         * testsuite/std/time/year_month/io.cc: New test.
4397         * testsuite/std/time/year_month_day_last/io.cc: New test.
4398         * testsuite/std/time/year_month_weekday/io.cc: New test.
4399         * testsuite/std/time/year_month_weekday_last/io.cc: New test.
4400
4401 2023-01-14  François Dumont  <fdumont@gcc.gnu.org>
4402
4403         * include/std/format [_GLIBCXX_INLINE_VERSION](to_chars): Adapt __asm symbol
4404         specifications.
4405         * config/abi/pre/gnu-versioned-namespace.ver: Add to_chars/from_chars symbols
4406         export.
4407
4408 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
4409
4410         * include/bits/std_mutex.h: Include <errno.h>.
4411
4412 2023-01-13  Arsen Arsenović  <arsen@aarsen.me>
4413
4414         * testsuite/20_util/to_chars/version.cc: Mark hosted-only.
4415         * testsuite/20_util/uses_allocator/lwg3677.cc: Ditto.
4416         * testsuite/20_util/weak_ptr/cons/self_move.cc: Ditto.
4417         * testsuite/std/ranges/adaptors/as_rvalue/1.cc: Replace usage of
4418         std::make_unique with a freestanding-compatible wrapper around
4419         unique_ptr.
4420         * testsuite/21_strings/basic_string_view/operations/contains/char.cc:
4421         Don't test for presence of __cpp_lib_string_contains on !HOSTED.
4422         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc:
4423         Ditto.
4424         * testsuite/std/ranges/version_c++23.cc: Don't test for presence
4425         of __cpp_lib_ranges in !HOSTED.
4426
4427 2023-01-13  Arsen Arsenović  <arsen@aarsen.me>
4428
4429         * include/Makefile.am: Install bits/char_traits.h,
4430         std/string_view
4431         * include/Makefile.in: Regenerate.
4432         * include/bits/char_traits.h: Gate hosted-only, wchar-only and
4433         mbstate-only bits behind appropriate #ifs.
4434         * include/std/string_view: Gate <iostream> functionality behind
4435         HOSTED.
4436         * include/std/version: Enable __cpp_lib_constexpr_string_view
4437         and __cpp_lib_starts_ends_with in !HOSTED.
4438         * include/std/ranges: Re-enable __is_basic_string_view on
4439         freestanding, include <string_view> directly.
4440         * include/precompiled/stdc++.h: Include <string_view> when
4441         !HOSTED too.
4442         * testsuite/20_util/function_objects/searchers.cc: Skip testing
4443         boyer_moore searchers on freestanding
4444         * testsuite/21_strings/basic_string_view/capacity/1.cc: Guard
4445         <string>-related tests behind __STDC_HOSTED__.
4446         * testsuite/21_strings/basic_string_view/cons/char/1.cc: Ditto.
4447         * testsuite/21_strings/basic_string_view/cons/char/2.cc: Remove
4448         unused <stdexcept> include.
4449         * testsuite/21_strings/basic_string_view/cons/char/3.cc: Remove
4450         unused <vector> include.
4451         * testsuite/21_strings/basic_string_view/cons/char/range.cc:
4452         Guard <string> related testing behind __STDC_HOSTED__.
4453         * testsuite/21_strings/basic_string_view/cons/wchar_t/1.cc:
4454         Guard <stdexcept> related tests behind __STDC_HOSTED__.
4455         * testsuite/21_strings/basic_string_view/element_access/char/1.cc:
4456         Ditto.
4457         * testsuite/21_strings/basic_string_view/element_access/wchar_t/1.cc:
4458         Guard <stdexcept> tests behind __STDC_HOSTED__.
4459         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc:
4460         Enable test on freestanding, guard <stdexcept> bits behind
4461         __STDC_HOSTED__.
4462         * testsuite/21_strings/basic_string_view/operations/substr/char.cc:
4463         Guard <stdexcept> bits behind __STDC_HOSTED__.
4464         * testsuite/21_strings/basic_string_view/operations/substr/wchar_t.cc:
4465         Ditto.
4466
4467 2023-01-13  Dimitrij Mijoski  <dmjpp@hotmail.com>
4468
4469         PR libstdc++/86419
4470         * src/c++11/codecvt.cc (read_utf8_code_point): Correctly detect
4471         errors in incomplete multibyte sequences.
4472         (utf16_in): Remove surrogates parameter. Fix conditions for
4473         returning partial.
4474         (utf16_out): Fix condition for returning partial.
4475         (ucs2_in): Do not pass surrogates argument to utf16_in.
4476         * testsuite/22_locale/codecvt/codecvt_unicode.cc: New test.
4477         * testsuite/22_locale/codecvt/codecvt_unicode.h: New header for
4478         tests.
4479         * testsuite/22_locale/codecvt/codecvt_unicode_wchar_t.cc: New
4480         test.
4481
4482 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
4483
4484         PR libstdc++/108331
4485         * config/io/c_io_stdio.h (__c_lock): Define as a typedef for
4486         __GTHREAD_LEGACY_MUTEX_T if defined.
4487
4488 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
4489
4490         PR libstdc++/108327
4491         * config/os/gnu-linux/ldbl-extra.ver (GLIBCXX_LDBL_3.4.31):
4492         Export __try_use_facet specializations for facets in namespace
4493         __gnu_cxx_ldbl128.
4494         * config/os/gnu-linux/ldbl-ieee128-extra.ver
4495         (GLIBCXX_IEEE128_3.4.31): Likewise for facets in namespace
4496         __gnu_cxx_ieee128.
4497         * testsuite/util/testsuite_abi.cc: Add to lists of known and
4498         latest versions.
4499
4500 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
4501
4502         * include/bits/std_mutex.h: Remove <system_error> include.
4503         * include/std/condition_variable: Add <bits/error_constants.h>
4504         include.
4505         * include/std/mutex: Likewise.
4506         * include/std/shared_mutex: Likewise.
4507
4508 2023-01-12  Jonathan Wakely  <jwakely@redhat.com>
4509
4510         PR libstdc++/77691
4511         * include/experimental/memory_resource
4512         (_GLIBCXX_MAX_ALIGN_MATCHES_MALLOC): Define.
4513         (do_allocate, do_deallocate): Check it.
4514         * testsuite/experimental/memory_resource/new_delete_resource.cc:
4515         Relax expected behaviour for 64-bit hppa-hp-hpux11.11.
4516
4517 2023-01-12  Jonathan Wakely  <jwakely@redhat.com>
4518
4519         * doc/xml/manual/abi.xml: Add latest library versions.
4520         * doc/html/manual/abi.html: Regenerate.
4521
4522 2023-01-12  François Dumont  <fdumont@gcc.gnu.org>
4523
4524         PR libstdc++/107189
4525         * include/bits/stl_tree.h (_Rb_tree<>::_M_insert_range_equal): Remove
4526         unused _Alloc_node instance.
4527
4528 2023-01-12  Jonathan Wakely  <jwakely@redhat.com>
4529
4530         * include/bits/atomic_wait.h (__detail::__platform_wait_t):
4531         Define as unsigned long if always lock-free, and unsigned int
4532         otherwise.
4533
4534 2023-01-10  Jonathan Wakely  <jwakely@redhat.com>
4535
4536         * src/c++20/tzdb.cc (tzdb_list::_S_init_tzdb): Use __try and
4537         __catch macros for exception handling.
4538
4539 2023-01-10  Jonathan Wakely  <jwakely@redhat.com>
4540
4541         PR libstdc++/108221
4542         * include/bits/stl_algobase.h (__lg): Replace six overloads with
4543         a single function template for all integer types.
4544         * include/bits/stl_algo.h (__merge_adaptive_resize): Cast
4545         arithmetic results back to _Distance.
4546
4547 2023-01-10  Jonathan Wakely  <jwakely@redhat.com>
4548
4549         PR libstdc++/108221
4550         * include/std/span (span::span()): Un-simplify constraint to
4551         work for size_t of lesser rank than int.
4552
4553 2023-01-07  LIU Hao  <lh_mouse@126.com>
4554
4555         PR middle-end/108300
4556         * src/c++11/system_error.cc: Define `WIN32_LEAN_AND_MEAN` before
4557         <windows.h>.
4558         * src/c++11/thread.cc: Likewise.
4559         * src/c++17/fs_ops.cc: Likewise.
4560         * src/filesystem/ops.cc: Likewise.
4561
4562 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
4563
4564         PR libstdc++/108228
4565         * src/c++20/tzdb.cc (zoneinfo_dir): Add diagnostic pragma.
4566
4567 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
4568
4569         PR libstdc++/108235
4570         * src/c++20/tzdb.cc (time_zone::_Impl::RulesCounter): New class
4571         template and partial specialization for synchronizing access to
4572         time_zone::_Impl::infos.
4573         (time_zone::_M_get_sys_info, reload_tzdb): Adjust uses of
4574         rules_counter.
4575
4576 2023-01-06  Patrick Palka  <ppalka@redhat.com>
4577
4578         PR libstdc++/108260
4579         * include/bits/utility.h (__cpp_lib_ranges_zip): Define for C++23.
4580         * include/std/ranges (__cpp_lib_ranges_zip): Likewise.
4581         (__cpp_lib_ranges_chunk): Likewise.
4582         (__cpp_lib_ranges_slide): Likewise.
4583         (__cpp_lib_ranges_chunk_by): Likewise.
4584         (__cpp_lib_ranges_join_with): Likewise.
4585         (__cpp_lib_ranges_repeat): Likewise.
4586         (__cpp_lib_ranges_stride): Likewise.
4587         (__cpp_lib_ranges_cartesian_product): Likewise.
4588         (__cpp_lib_ranges_as_rvalue): Likewise.
4589         * include/std/version: Ditto.
4590         * testsuite/20_util/tuple/p2321r2.cc: Verify value of
4591         feature-test macro.
4592         * testsuite/std/ranges/adaptors/as_rvalue/1.cc: Likewise.
4593         * testsuite/std/ranges/adaptors/chunk/1.cc: Likewise.
4594         * testsuite/std/ranges/adaptors/chunk_by/1.cc: Likewise.
4595         * testsuite/std/ranges/adaptors/join_with/1.cc: Likewise.
4596         * testsuite/std/ranges/adaptors/slide/1.cc: Likewise.
4597         * testsuite/std/ranges/adaptors/stride/1.cc: Likewise.
4598         * testsuite/std/ranges/cartesian_product/1.cc: Likewise.
4599         * testsuite/std/ranges/repeat/1.cc: Likewise.
4600         * testsuite/std/ranges/zip/1.cc: Likewise.
4601         * testsuite/std/ranges/version_c++23.cc: New test.
4602
4603 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
4604
4605         PR libstdc++/108214
4606         * include/std/bitset (operator>>): Use alloca in the right
4607         scope, not in a constructor.
4608         * testsuite/20_util/bitset/io/input.cc: Check case from PR.
4609
4610 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
4611
4612         PR libstdc++/108221
4613         * include/std/format (basic_format_arg) [!__cpp_lib_to_chars]:
4614         Disable visiting floating-point types.
4615
4616 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
4617
4618         PR libstdc++/108288
4619         * include/debug/safe_iterator.h (_Safe_iterator::operator++(int))
4620         (_Safe_iterator::operator--(int)): Do not hold lock around
4621         construction of return value.
4622
4623 2023-01-05  John David Anglin  <danglin@gcc.gnu.org>
4624
4625         * config/cpu/hppa/atomicity.h (_PA_LDCW_INSN): Define.
4626         (__exchange_and_add): Use _PA_LDCW_INSN.  Use ordered store for
4627         lock release.  Revise loop.
4628         (__atomic_add): Likewise.
4629
4630 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
4631
4632         PR libstdc++/108212
4633         * python/libstdcxx/v6/printers.py (_utc_timezone): New global
4634         variable.
4635         (StdChronoTimePointPrinter::to_string): Use it.
4636
4637 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
4638
4639         PR libstdc++/108290
4640         * include/std/functional (_Bind_front): Add no_unique_address
4641         attribute to data members.
4642         * testsuite/20_util/function_objects/bind_front/107784.cc: Check
4643         size of call wrappers with empty types for targets and bound
4644         arguments.
4645
4646 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
4647
4648         PR libstdc++/108211
4649         * src/c++20/tzdb.cc (chrono::current_zone()): Check for zone
4650         using only last component of the name.
4651
4652 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
4653
4654         PR libstdc++/108228
4655         PR libstdc++/108235
4656         * config/abi/pre/gnu.ver: Move zoneinfo_dir_override export to
4657         the latest symbol version.
4658         * src/c++20/tzdb.cc (USE_ATOMIC_SHARED_PTR): Define to 0 if
4659         atomic<_Node*> is not always lock free.
4660         (USE_ATOMIC_LIST_HEAD): New macro.
4661         [__hpux__] (__gnu_cxx::zoneinfo_dir_override()): Provide
4662         definition of weak symbol.
4663         (tzdb_list::_Node::_S_head): Rename to _S_head_cache.
4664         (tzdb_list::_Node::_S_list_head): New function for accessing
4665         list head efficiently.
4666         (tzdb_list::_Node::_S_cache_list_head): New function for
4667         updating _S_list_head.
4668
4669 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
4670
4671         PR libstdc++/108265
4672         * include/std/chrono (hh_mm_ss): Do not use chrono::abs if
4673         duration rep is unsigned.
4674         * testsuite/std/time/hh_mm_ss/1.cc: Check unsigned rep.
4675
4676 2023-01-04  Iain Sandoe  <iain@sandoe.co.uk>
4677
4678         PR libstdc++/108228
4679         * config/abi/pre/gnu.ver (GLIBCXX_3.4):
4680         Add __gnu_cxx::zoneinfo_dir_override().
4681
4682 2023-01-04  Jonathan Wakely  <jwakely@redhat.com>
4683
4684         PR libstdc++/108258
4685         * include/std/array (__array_traits<T, 0>::operator T*()): Add
4686         constexpr.
4687         * testsuite/23_containers/array/element_access/constexpr_c++17.cc: Check
4688         std::array<T, 0>::data().
4689
4690 \f
4691 Copyright (C) 2023 Free Software Foundation, Inc.
4692
4693 Copying and distribution of this file, with or without modification,
4694 are permitted in any medium without royalty provided the copyright
4695 notice and this notice are preserved.